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1
Tyuleneva, Tatyana. "Improvement of production control of coal mining enterprises with underground mining method." E3S Web of Conferences 303 (2021): 01017. http://dx.doi.org/10.1051/e3sconf/202130301017.
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Production safety is one of the problems of competitiveness of underground mining enterprises, one manifestation of which is the reduction and minimization of the number of accidents and incidents of personal injury or even death. To solve this problem, it is necessary to improve the system of production control of coal mines in order to eliminate these factors. Relative indicators of accidents and injuries at underground coal mines of Russia in comparison with the average indicators are considered, and also importance of the human factor in the occurrence of dangerous production situations and the evaluation of their causes and effects are revealed. In addition, the article considers the most common violations of safety requirements for underground coal mining, analyzes the experience of foreign countries in improving the production control system, assesses the possibility of its application for improving production control at Russian coal mines, and determines main areas for implementing a risk-based approach at coal mining enterprises.
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Pirieva, Natalya, and Inna Ermakova. "Coal Pillars Safe Mining." E3S Web of Conferences 41 (2018): 01026. http://dx.doi.org/10.1051/e3sconf/20184101026.
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Safety pillars are the necessary objects for underground mining of coal seams. The having been mines; safety pillars, which include the development workings, lose their purpose. The coal reserves in these pillars are significant and can be mined. However, the pillars have fracture zones in the edges. The size of the fracture zones in the marginal parts of the pillars should be taken into account when choosing a mining system and its parameters. Coal pillar stress-strain analysis was carried out by the finite element method. The developed technique for coal pillar stress-strain analysis takes into account the post-critical strain of the coal seam edge. The reliability of the technique was verified by the experimental method. The calculated and experimental values differ insignificantly. The geomechanical condition of the nine safety pillars in A.D. Ruban mine of OJSC “SUEK-Kuzbass” was studied. The enterprise mines three low dip seams at a depth of up to 290 m. The amount of losses in fracture zones is defined for the pillars, which include slopes and entries. Fracture zones in the pillars were sized taking into account the actual structure of the seam roofs: the depth of bedding, their thickness and strength characteristics. The economic effect of mining of the safety pillars is pre-computed.
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Deng, Bao Ping, Shuai Liu, Chen Wang, Yao Dong Jiang, and Hong Wei Wang. "Numerical Investigation on Passing through Goaf in Coal Mine Failurezone." Applied Mechanics and Materials 275-277 (January 2013): 1518–24. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1518.
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Random mining by small coal mines left many destruction districts with a large range in Fenxi mining district. According to incomplete statistics, the destroyed areas by small coal mines amount to nearly one hundred square kilometers and have over three hundred million tons of resource reserves in Xinliu, Xinyu and Xinyang these three fields. Small coal mines tend to use outdated techniques such as replacing mining with advancement, small excavation with large stoping and room pillar mining technique, which have a stoping rate of only 10% to 25%. Some of the wellheads were not closed seamlessly, which resulted in self-combustion; some were damaged due to the mining of the lower coal seam. A serious security risk existed during the mining of the lower coal seam due to the uncertainty of gas, water and roof pressure. In addition, the destructed area by small coal mines is badly large in Shanxi Province and even the whole country which remains a huge amount of resources. The implementation of this subject is significant.
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Chang, Qingliang, Jianhang Chen, Huaqiang Zhou, and Jianbiao Bai. "Implementation of Paste Backfill Mining Technology in Chinese Coal Mines." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/821025.
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Implementation of clean mining technology at coal mines is crucial to protect the environment and maintain balance among energy resources, consumption, and ecology. After reviewing present coal clean mining technology, we introduce the technology principles and technological process of paste backfill mining in coal mines and discuss the components and features of backfill materials, the constitution of the backfill system, and the backfill process. Specific implementation of this technology and its application are analyzed for paste backfill mining in Daizhuang Coal Mine; a practical implementation shows that paste backfill mining can improve the safety and excavation rate of coal mining, which can effectively resolve surface subsidence problems caused by underground mining activities, by utilizing solid waste such as coal gangues as a resource. Therefore, paste backfill mining is an effective clean coal mining technology, which has widespread application.
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Sharma, Anjali, and Geeta Sumbali. "Ecobiology of coal mines and spoils." Journal of Applied and Natural Science 11, no. 3 (September 10, 2019): 624–31. http://dx.doi.org/10.31018/jans.v11i3.2130.
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Coal is an important non-renewable source of energy, which is being constantly used by mankind for various purposes. Coal mining activities affect the surrounding ecosystem by contaminating it with traces of toxic metals, which may accumulate and affect the diversity and abundance of biological communities. A number of microorganisms, such as, filamentous fungi, yeasts and bacteria are known to degrade coal by their enzymatic action and use it as the sole source of carbon. In addition, the indoor environments of coal mines possess bioaerosols, which may include living or dead allergens, pathogenic or non-pathogenic bacteria, fungi, viruses, mycotoxins, bacterial endotoxins, peptidoglycans, etc., that may cause skin, respiratory tract and other health problems. This article throws light on the impact of coal mining on the surrounding ecosystem, degradation of coal by the microbial inhabitants and their effects on the health of miners.
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Lynas, D., and R. Burgess-Limerick. "Whole-Body Vibration Exposures in Undeground Coal Mining Operations." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 60, no. 1 (September 2016): 914–18. http://dx.doi.org/10.1177/1541931213601210.
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Studies conducted on surface coal mining equipment have identified whole-body vibration as a significant hazard. Operators of underground mobile equipment, particularly shuttle cars and transport vehicles, are likely to be exposed to significant levels of whole-body vibration. To date, measuring whole-body vibration from underground mining mobile equipment has been difficult due to the strict guidelines governing the use of electrical equipment in underground mines. This paper presents data obtained from two low-methane coal mines using an iOS application installed on iPod Touch devices. The majority of measurements taken from a range of mobile plant and equipment in use at the underground coal mines exceeded the ISO2631.1 Health Guidance Caution Zone. Further investigations are being undertaken to develop a thorough understanding of whole-body vibration exposures to which operators of mobile equipment used in underground coal mines are exposed and the opportunities for application of this information to assist mine site safety, health and risk management processes.
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Turner, G., R. J. Yelf, and P. J. Hatherly. "Coal mining applications of ground radar." Exploration Geophysics 20, no. 2 (1989): 165. http://dx.doi.org/10.1071/eg989165.
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Coal due to its low conductivity and high electromagnetic contrast with surrounding rocks is an attractive medium for study by ground radar. Results of trials in Australian coal mines show that ground radar can be a useful tool for horizon control, locating old underground workings and mapping geological structure both from the surface and within mine roadways.
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Dang, Phuong Thao, and Vu Chi Dang. "Mine Water Treatment in Hongai Coal Mines." E3S Web of Conferences 35 (2018): 01007. http://dx.doi.org/10.1051/e3sconf/20183501007.
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Acid mine drainage (AMD) is recognized as one of the most serious environmental problem associated with mining industry. Acid water, also known as acid mine drainage forms when iron sulfide minerals found in the rock of coal seams are exposed to oxidizing conditions in coal mining. Until 2009, mine drainage in Hongai coal mines was not treated, leading to harmful effects on humans, animals and aquatic ecosystem. This report has examined acid mine drainage problem and techniques for acid mine drainage treatment in Hongai coal mines. In addition, selection and criteria for the design of the treatment systems have been presented.
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Zhylinska, Оksana, Valery Balan, and Tatiana Petrovska. "COMPARATIVE ANALYSIS OF THE PROSPECTS OF UKRAINIAN COAL MINES BY THE COPRAS-G METHOD." Ekonomika 92, no. 4 (January 1, 2013): 100–113. http://dx.doi.org/10.15388/ekon.2013.0.2340.
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Abstract. The article covers the elaboration of a methodical toolkit of assessing the prospects of coal mines, which allows for the differentiation of enterprises by an integrated index of their prospects as regards mining and the geological conditions of each coal mine. Is proposed An algorithm for the coal mine prospects assessment, of containing the stages of selecting the characteristics of mining and geological conditions, the use of a multi-attribute assessment by the COPRAS-G interval data, and the rating of coal mines. A comparative analysis of the prospects, employing the COPRAS-G method, was tested on an the example of 14 coal mines of the Central district Donbass of Ukraine.Key words: comparative analysis, prospects, coal mines, multi-attribute assessment, imprecise data, COPRASG method, CEE
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Tkocz, Maria. "Efekty restrukturyzacji górnictwa węgla kamiennego w Polsce." Studies of the Industrial Geography Commission of the Polish Geographical Society 9 (January 1, 2006): 28–39. http://dx.doi.org/10.24917/20801653.9.3.
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This paper presents changes in the functioning of hard coal mining in Poland in the period of development of free market economy, i.e. after 1989. During this period some attempts were made to bring the coal mining to remunerativeness. Five programmes of coal mining restructuring were implemented. Their main aim was the reduction of excessive production capacities. 23 coal mains were closed down in the period 1989–2003, especially in the northern and eastern parts of the coal basin, which include the areas where coal exploitation was the longest and coal resources are located under considerably urbanised areas, often within safety pillars (Bytom, Chorzów, Gliwice, Zabrze, Będzin, Dąbrowa Górnicza, Sosnowiec). As a consequence, coal production fell from 177.4 million tonnes to 100.5 million tonnes and the employment decreased from 415.7 thousand to 135.7 thousand. An organisational structure is represented by three coal syndicates: Katowice Capital Group with 8 coal mines, Coal Campaign with 23 coal mines and Jastrzębie Coal Company with 5 coal mines.
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Biały, Witold. "Equipment/machinery failure rate in hard coal mines." New Trends in Production Engineering 2, no. 1 (October 1, 2019): 353–63. http://dx.doi.org/10.2478/ntpe-2019-0038.
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Abstract The main task of the maintenance services in hard coal mines is to ensure continuous operation of the equipment (machines). The measurable effect of these actions should be the reduction of maintenance costs of equipment (machinery) and thus the reduction of production costs – coal mining. The paper presents an issue of failure rate of technical measures applied in the mining process. In order to ensure greater efficiency and productivity, it is necessary to find the causes of the most frequent failures in this process and effectively counteract them. As a result of these activities, the production availability of machines/equipment involved in the mining process will increase. This will to a large extent ensure failure-free and uninterrupted progress, increase productivity and improve the quality of manufactured products, as well as reduce the operating costs of equipment (machines), and thus reduce production and product costs. This effect should consist mainly in the control of rational, safe and effective use and operation of equipment (machines) in the exploitation process. An algorithm implemented in one of the hard coal mines was presented. The technical condition of underground mining equipment was observed by periodical measurements of vibration parameters at selected points on the machine – measurements were conducted with a vibration pen. The aim of this research is to improve the reliability of technological process of a mining plant through its failure-free operation. In order to achieve this objective, i.e. the efficiency of a mining company, it is necessary to reduce its costs. The action that leads to this aim is a proper assessment of the technical condition with regard to the equipment used in technological process.
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Yutiaev, Evgeny, Anatoly Meshkov, Anton Popov, and Arcady Shabarov. "Allocation of the geo-dynamically hazardous zones during intensive mining of flat-lying coal seams in the mines of SUEK-Kuzbass JSC." E3S Web of Conferences 134 (2019): 01022. http://dx.doi.org/10.1051/e3sconf/201913401022.
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Hazardous and ineffective mines were closed, and a number of underground and strip mines of a modern technological level were built as a result of the restructuring of the coal industry in Russia. However, safety in the coal mines continues to be one of the urgent issues nowadays. In underground coal mining, the main types of risks are processes occurring in the rock mass as a result of mining operations. It is necessary to realize timeous and the most accurate prediction of harmful events, which occur during a development of coal fields, to increase the efficiency and reduce the cost of coal mining. The most optimal and, at the same time, comprehensive approach to predicting possible natural hazardous events in the process of modern coal mining are considered in this article. The results of implementation of integration of different methods of geodynamic and geomechanics researches are presented in this paper.
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Kędzior, Sławomir. "Emission and commercial utilization of coal mine methane in the Upper Silesian Coal Basin illustrated by the example of Katowice Coal Holding Company." Environmental & Socio-economic Studies 3, no. 1 (March 1, 2015): 1–10. http://dx.doi.org/10.1515/environ-2015-0051.
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Abstract The article deals with the issue of the release of methane from coal seams and its emission to the atmosphere from the mines of Katowice Coal Holding Company in the years of 1997-2011. This period is characterized by organizational changes in Polish mining industry involving liquidation or a merger of mines, an increase in both the concentration of coal mining activity, and the depth of the exploitation at which the amount of methane in coal seams grows ever larger. The analysis of the variation in the methane emission from the coal mines in that period points out a decline in the intensity of the emission until 2005, probably owing to the liquidation of some mines, later, but in the years of 2006-2010 - a considerable increase in both the absolute methane emission of the mines and the methane emission to the atmosphere despite a dropping coal extraction. This signifies that mining activity takes place in increasingly difficult gas conditions prevailing at great depths. Despite a slight decrease in both the absolute methane emission and methane emission to the atmosphere in 2011, a continuously growing trend of this phenomenon should be expected in the future. A similar tendency is also visible in the whole Upper Silesian Coal Basin, however the methane emission peak falls in 2008. In order to curb the growth of the amount of the emitted methane, it should be commercially utilized. Particularly vital is considering methane as an unconventional resource, following the example of other countries.
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Molina, Snider, Ismael Soto, Lily Sun, and Ke Cheng Liu. "Pervasive Environment for Gases Detection and Collapses in Underground Mines." Advanced Materials Research 875-877 (February 2014): 2056–61. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.2056.
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Safety is an element of extreme priority in mining operations; currently many traditional mining countries are investing in the implementation of wireless sensors capable of detecting risk factors. The objective of this research is to contribute to the implementation of sensors for continuous monitoring inside underground mines providing technical parameters for the design of sensor networks applied in underground coal mines. The analyzed of applying these systems in terms of Benefit, Opportunity, Cost and Risk are discussed. Finally, a dynamic assessment of safety at underground mines it is proposed, this approach offers a contribution to design personalized monitoring networks, the experience developed in coal mines provides a tool that facilitates the application development of technology within underground coal mines.
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Hendryx, Michael, Mohammad Saidul Islam, Guang-Hui Dong, and Gunther Paul. "Air Pollution Emissions 2008–2018 from Australian Coal Mining: Implications for Public and Occupational Health." International Journal of Environmental Research and Public Health 17, no. 5 (February 29, 2020): 1570. http://dx.doi.org/10.3390/ijerph17051570.
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Occupational exposure limits for respirable coal dust are based on exposure during working hours, but coal miners may experience additional community-based exposures during nonworking hours. We analyzed Australia National Pollutant Inventory (NPI) data for the years 2008–2018 to estimate air pollutants (metals, nitrogen oxides, particulate matter ≤ 10 micrometers (PM10) and ≤2.5 micrometers (PM2.5)) originating from coal mines. PM10 levels from community-based air monitors in Queensland and New South Wales were also compared between mining and nonmining communities. Results indicated that tons of coal mined increased over the study period, and that levels of particulate matter, metals, and nitrogen oxides increased significantly over time as well. Coal mines accounted for 42.1% of national PM10 air emissions from NPI sites. PM2.5 from coal mines accounted for 19.5% of the national total, metals for 12.1%, and nitrogen oxides for 10.1%. Coal mining occurred in 57 different post codes; the 20 coal-mining post codes with the highest PM10 emissions were home to 160,037 people. Emissions of all studied pollutants were significantly higher from coal mining sites than from other types of NPI sites. Results from community-based air monitoring stations indicated significantly higher population PM10 exposure in coal mining communities than in nonmining communities. The health of the public at large is impacted by coal mining, but to the extent that miners also live near coal mining operations, their total exposure is underestimated by consideration of exposure only during working hours.
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Li, Yong Jun, Chen Li, Hao Sun, and Hai Tao Xu. "Research on Upper Limit Increased of Mining in Coal Mining Face." Applied Mechanics and Materials 737 (March 2015): 846–50. http://dx.doi.org/10.4028/www.scientific.net/amm.737.846.
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In order to guarantee the safety of the coal mine, needing to leave in reasonable waterproof safety coal pillar. Aiming at the working face 3311 of Xuchang coal mine, this article based on the analysis to the basis of factors for improving the mining limit, using UDEC numerical simulation, the regulations of coal mining under buildings, railways and water bodies and historical experience to analyze crack-production ratio of the working face, study the height of water flowing fractured zone development, designing test mining program. Through the upper mining limit to liberate 160000t coal resources and to gain the obvious economic benefits, which provide important significance for other similar coal mines in coal field of North China area.
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Mei, Yong. "Deep Mining Optimization of Rock Burst Mines." Applied Mechanics and Materials 448-453 (October 2013): 3859–62. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3859.
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To prevent threaten of impact disaster, high-pressure water is injected into coal face, which is most widely used in impact-type mine. In such cases, by analyzing the rock burst tendency of a particular type of deep mining pit and occurrence of the mining process, rock samples drilled from the coal mine were taken for the conventional mechanical properties test and rock burst tendency test respectively under dry and wet state. Cuttings volume indicator affected by injection has been optimized to improve the prediction sensitivity. "One shift anti-impact, two-shift production "patterns labor organization model, adjusted development system layout and cut drilling index optimizations, as well as the allocation of high-pressure water injection drilling means, greatly improving the water injection effect, which probably provide a reference for similar mines to safe and efficiently mining.
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Gosar, Mateja, Robert Šajn, Miloš Miler, Ana Burger, and Špela Bavec. "Overview of existing information on important closed (or in closing phase) and abandoned mining waste sites and related mines in Slovenia." Geologija 63, no. 2 (December 7, 2020): 221–50. http://dx.doi.org/10.5474/geologija.2020.018.
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The presented work provides a comprehensive inventory of data on closed (or in closing phase) and abandoned underground and surface mines and mining waste sites in Slovenia, collected within the framework of the Geological Survey of Slovenia (GeoZS) over the last two decades. Furthermore, a detailed overview of information on closed and abandoned mining waste sites in Slovenia is given. In order to establish the inventory, a definition of the work methodology, a comprehensive research of the archived and published literature, and the harmonisation and management of the collected data was carried out. Based on a selected methodology, the inventory contains information on 33 metal mines, 43 coal mines, 51 non-metallic mineral resource mines, 156 waste sites from metal mines and 18 waste sites from coal mines. The inventory is in the open access Google Earth file. It provides a basis for further research into the environmental impact of mining waste, which has been carried out since the EU Directive on the management of waste from extractive industries (Directive 2006/21/EC hereafter) was adopted into national law. In general, about 11,621,333 m3 of waste sites from metal mines and 76,188,000 m3 of waste sites from coal mines are covering about 678 hectares of Slovenian territory. More than half (64 %) of the waste from metal mines was produced in the Mežica lead and zinc mine, while the other two mines with a still significant share of produced waste were the Idrija mercury mine (18 %) and the Žirovski vrh uranium mine (15 %). Among the closed coal mines, the largest amount (46 %) of waste was generated by the coal mine Trbovlje-Hrastnik, while the other two coal mines with still significant share of waste produced were Kočevje (28 %) and Kanižarica (17 %).
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Nomani, M. Z. M., Ali Reja Osmani, Ghazal Salahuddin, Madiha Tahreem, Saif A. Khan, and Alaa Hussein Jasim. "Environmental Impact of Rat-Hole Coal Mines on the Biodiversity of Meghalaya, India." Asian Journal of Water, Environment and Pollution 18, no. 1 (January 25, 2021): 77–84. http://dx.doi.org/10.3233/ajw210010.
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The paper appreciates coal mining laws and policies applied by National Green Tribunal to ban traditional, artisanal and rat-hole coal mining in Jaintia Hills of Meghalaya (a state in India) in an attempt to conserve its environment and biodiversity. Meghalaya represents an important part of the Indo-Burma biodiversity hotspot which is one of the four bio-diversity hotspots of India and ranks 34th among the hotspots in the world. It is equally bestowed with rich deposits of coal, which can be found in the Khasi Hills, Garo Hills and Jaintia Hills districts. Coal mining from these districts is labour-intensive and involves digging narrow rat-hole sized tunnels that are four-feet high. The workers enter into the rat-hole in an extremely hazardous manner, setting aside the ergonomic principles for the extraction of coal. The legal framework of coal mining is governed by Mines Act, 1952, Mines and Minerals (Development and Regulation) Act, 1957, Mineral Concession Rules, 1960, Coal Mines (Nationalization) Act, 1973, Mineral Conservation and Development Rules, 1988 and Mines and Minerals (Development and Regulation) Amendment Act, 2015. However, these laws are not applied to Meghalaya because of its constitutional status enshrined in Sixth Schedule and Article 244 of the Constitution of India, 1950. Coal mining has brought employment opportunities, tribal sustenance and economic development that led to environmental degradation, disruption of ecosystems and biological diversity. The hazardous pursuits have been bereft of safety and ergonomic principle besides being oblivious of SDF of mining laws and policies in India.
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Škvareková, Erika, Marianna Tomašková, Dušan Sabadka, Marian Šofranko, and Štefan Zelenák. "Evaluation and Risk Factors of Roadheaders in Coal Mines." Management Systems in Production Engineering 29, no. 3 (June 24, 2021): 242–50. http://dx.doi.org/10.2478/mspe-2021-0030.
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Abstract During mechanical disintegration of the rock, for mining works are used also roadheaders. Roadheaders, in comparison with disintegration by blasting operations can without interuption, and works changes with one machine, dissolve, load and at the same time mine disintegrated rock. These electro-hydraulic machines cause no harmful vibrations and are ideal for mining coal and other soft rock minerals. Mechanical mining is safer, protects the rock environment, allows mining without further breaks, allows you to achieve a higher level of daily progress and also saves work. The analysis of occupational accidents in the Slovak Republic shows that it is necessary require from employees increased attention in any work activity and attention in the work performed (mainly work in handling material, objects and burdens). In the underground coal mines further attention needs to be paid to securing hazardous areas, it is necessary to proceed in such a way as to prevent as much as possible the fall of rock as much as possible Underground roads require modification and equipment in accordance with regulations. It is necessary to follow health and safety instructions mentioned in operating and maintenance documentation. Correction of some deficiencies is ordered by a decision of the Mining Office. Most measures are aimed at adhering to technological discipline, to complement operating documentation, to prevent rock falls, to equip some machinery and transport equipment, to work procedures for handling loads, to maintenance of mining works and for explosion and anti-vapor prevention. In this article, we assess the safety risks of two roadheaders for coal mining works in Slovak conditions. Pairwise comparisons of the criteria of selected roadheaders were used to determine the safety risks, as well as taking into account the risks and safety measures according to the mixed methods following to the standard.
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Byrnes, Patricia, and Rolf Färe. "Surface mining of coal: efficiency of US interior mines." Applied Economics 19, no. 12 (December 1987): 1665–73. http://dx.doi.org/10.1080/00036848700000089.
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Hutchinson, Ashleigh. "Controlled Roof Collapse during Secondary Mining in Coal Mines." International Journal of Differential Equations 2012 (2012): 1–21. http://dx.doi.org/10.1155/2012/806078.
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Karfakis, Mario G., and Ertugrul Topuz. "Post mining subsidence abatements in Wyoming abandoned coal mines." Mining Science and Technology 12, no. 3 (May 1991): 215–31. http://dx.doi.org/10.1016/0167-9031(91)91137-7.
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Kharchenko, V. F. "Research of dust deposit in mining of coal mines." Mining informational and analytical bulletin, S30 (2020): 17–23. http://dx.doi.org/10.25018/0236-1493-2020-10-30-17-23.
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Frejowski, Aleksander, Jan Bondaruk, and Adam Duda. "Challenges and Opportunities for End-of-Life Coal Mine Sites: Black-to-Green Energy Approach." Energies 14, no. 5 (March 3, 2021): 1385. http://dx.doi.org/10.3390/en14051385.
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This paper presents the possibilities of adapting active mines to generate green energy after their closure using their resources and/or infrastructure. For this purpose, firstly, the temporal horizon of selected mines in Poland was determined, its basic assumption being the analysis of the current state. In the research, 18 mining plants operating within 12 mines in the Upper Silesian Coal Basin (USCB) were analyzed. The analyzed mines belong to three of the five largest hard coal producers in Poland, and the main object of exploitation is hard coal of energy types. Severe restrictions or even abandonment of further investments in the development of the coal mining industry were taken into consideration (regarding the construction of new shafts or the development of new exploitation levels). When determining the temporal horizon, the challenges that hamper the exploitation based at the levels of natural hazards and depth of exploitation in each mine were considered. Secondly, the criteria for the adaptation of active mines to generate energy are presented. The possibility of using the resources and infrastructural potential of active mines to produce geothermal energy from water, extracting coalbed methane (CBM), and processes of underground coal gasification (UCG) are analyzed. Finally, for a selected example—generating energy from underground coal gasification in Polish mine conditions—a structural analysis of the criteria was performed using the MICMAC method, as the Central Mining Institute has an extensive experience in the development of underground coal gasification trials in coal mines. Based on expert analysis and using structural analysis, the criteria important for UCG were selected. As demonstrated in the article, the MICMAC method can be applied in other scenarios with different criteria to implement new technologies in coal mines.
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Ianc, Nicolae, Corneliu Boantă, Ion Gherghe, and Cristian Tomescu. "Environmental impact of methane released from coal mines." MATEC Web of Conferences 305 (2020): 00030. http://dx.doi.org/10.1051/matecconf/202030500030.
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Methane gas accompanying coal deposits was formed as a result of successive stages of the anaerobic process of vegetal material transformation into coal, at high temperatures and pressures, without external oxygen supply. During the metamorphism process, the content of C, H and O is modified, meaning an increase in carbon content, a decrease in hydrogen and oxygen, the nitrogen and sulphur content remaining constant. During this process, water and carbon dioxide is generated, the water being generated in the first transformation phases. Within the slow oxidation process, gas products result by using the oxygen content in plants, especially methane and carbon dioxide due to the fermentation stimulated by bacteria. Methane released into the atmosphere following the mining of coal have double ecological impact, participating in the destruction of the ozone layer and at the same time contributing to the enhancement of the greenhouse effect. At the same time, methane gas released into the atmosphere during coal mining may be used by mining operators as primary power resource for covering the power requirements of the mine or it can be used for commercial purposes.
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Xiao, Jin. "A Region of Coal Mine Geological Environmental Survey Assessment and Prevention Countermeasures." Advanced Materials Research 726-731 (August 2013): 1078–84. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1078.
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Exploitation and utilization of coal resources will cause disturbances to the geologic environment and damages to the geologic environment conditions of the mining area, and lead to damages to ecological environment, formation of geologic hazards of mines and environmental pollution in the mining area. In this paper, current geologic environment of mines is investigated, and geologic environment problems of mines are assessed and prevention and control measures are researched on a basis of classified areas, with Dazhou, which is an important city in East Sichuan and where coal resources are rich and exploited frequently, as an example, to provide reference for protection, treatment and recovery of geologic environment of coal mines in East Sichuan.
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Pietsch, Kaja, and Ryszard Ślusarczyk. "The application of high‐resolution seismics in Polish coal mining." GEOPHYSICS 57, no. 1 (January 1992): 171–80. http://dx.doi.org/10.1190/1.1443181.
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Use of high‐resolution seismics were applied to the exploration and development of coal deposits in the Upper Silesian and the Lublin Coal Basins in Poland. High‐resolution seismic surveys were carried out in various geological and mining conditions. The objectives were to map commercial coal seams, locate coal‐less zones and faults, and solve some problems associated with mining conditions, e.g., determining the height of caving roof zone. Theoretical modeling studies of seismic wave response for several geological models representing the coal‐basin structures were used to address these problems. Results from these successful surveys helped improved designs of new mines and/or expand existing ones to provide more productive and safer coal mines.
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Sun, Qian, Feng Yi Guo, Bin Li, Fei Yin, and Peng Xu. "Design of Mining Portable Static Resistance Strain Gauge Based on ATmega16L." Advanced Materials Research 383-390 (November 2011): 5917–22. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5917.
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Mining portable static resistance strain gauge based on ATmega16L is introduced in this paper. It is used to monitor stress of bolt support in coal mines. The strain gauge is high-precision, simple and Chinese-displaying. It offers a more portable testing method of bolt support in coal mines for the workers.
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ZEMSKOV, A. N., and M. Y. LISKOVA. "ANALYZING CASES AND CIRCUMSTANCES OF EMERGENCE OF ACCIDENTS IN THE MINES AND MINES DEVELOPING GAS-BEARING FIELDS." News of the Tula state university. Sciences of Earth 2, no. 1 (2020): 67–77. http://dx.doi.org/10.46689/2218-5194-2020-2-1-67-77.
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Mining is followed by big loss of human life and high traumatism. And among the main reasons - explosions of coal dust and hydrocarbon gases on coal mines, the gasdynamic phenomena and explosions of gases on potash mines. Gas was and remains the most terrible source of natural dangers in mines and mines, the object demanding continuous and careful studying. The analysis of the breeds given on natural gas content, studying of the nature usual and the souffle of gas-allocations, emergence and courses of the gas-dynamical phenomena allow to optimize technologies of mining and to ensure safety of work.
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Tutak, Magdalena. "Analysis of the similarity of hard coal mines in terms of the number of dangerous incidents caused by the activation of natural hazards." Multidisciplinary Aspects of Production Engineering 2, no. 1 (September 1, 2019): 91–100. http://dx.doi.org/10.2478/mape-2019-0009.
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Abstract Hard coal mines and mining enterprises involved in hard coal exploitation in the area of the Upper Silesian Coal Basin (Górnośląskie Zagłębie Węglowe) are characterised by the presence of natural hazards typical of this type of exploitation. These hazards include the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The article presents the results of a taxonomic analysis aimed at determining the similarity of hard coal mines and mining enterprises in Poland in terms of the dangerous incidents caused by the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The analysis was carried out for the 2008-2018 data and encompassed a total of 26 hard coal mines and mining enterprises located in the Upper Silesian Coal Basin. The analysis was performed using the k-means method of non-hierarchical clustering. The main objective of the article was to determine homogenous groups (clusters) of mines exhibiting the greatest similarity in terms of dangerous incidents caused by the activation of natural hazards in the years 2008-2018. These data can be successfully used for the development of preventive measures and risk analyses for these enterprises.
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Bukowski, Przemysław. "Evaluation Of Water Hazard In Hard Coal Mines In Changing Conditions Of Functioning Of Mining Industry In Upper Silesian Coal Basin – USCB (Poland)." Archives of Mining Sciences 60, no. 2 (June 1, 2015): 455–75. http://dx.doi.org/10.1515/amsc-2015-0030.
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AbstractWater hazard has been accompanying underground mining since the first mines were built. The hazard is particularly often in the areas of mines situated in hydrogeologically outcropped part of USCB and in water rich formations of Cracow Sandstone Series. To plan properly mining actions and technical measures at each stage of life of a mine it is necessary to evaluate hydrogeological and geomechanical conditions and their changes. The conditions determine formation, occurrence and volume of the most serious sources of water hazard. Symptoms obtained in geomechanical tests and observations of forming and dewatering reservoirs of underground water, show that it is necessary to update constantly evaluation and classification of sources of water hazard or the state of water hazard in the coal mines of USCB.Development of underground mining in 1945-1990, which resulted in a quick increase in production, determined development and the range of influence of mining operations on the rock mass and the influence on the state of drainage and saturation of the rock mass. The result of the changes was an apparent influence on the changes in the state and shaping water hazards in the course of time. Since 1989 economic conditions of functioning of mines have been tightly associated with the conditions and rules of market economy. As a result of each of the so-called restructuring of mining activity a certain number of mining companies was closed, merged or split. The consequence is that in the vicinity of active mines and prospective mining areas, more and more often there are partially or completely flooded abandoned coal mines. Flooded coal mines have changed and still do hydrogeological conditions of their surrounding and force active mining companies to introduce changes in mining activities they are planning and conducting. The current state of flooding mine workings, is a result of realizing previous plans of restructuring mining industry, and all the changes of the state require hydrogeological documentation and evaluation of water hazard.In the today’s conditions of functioning of mining industry, sources of water hazards like water reservoirs in goafs, are one of six main types of sources of hazard, and at the same time the biggest problem and the most serious threat for active mine workings. As the hydrodynamic conditions in the closed areas stabilise and the water piles up close to the surface, an increase in the influence of reservoirs on the state of environmental and public hazard (subsidence, overflowing, flooding, pollution of water in the aquifers located in the overburden and surface water).As there is a qualitative change in the directions, causes and sources of water hazard, it shall be expected that the changes will tend to increase the threat level from the closed mines. Hence since 2000 the Central Mining Institute has been focused mainly on methodology research, both laboratory ones of various scale of observation referring to the properties of rocks and rock debris, and in situ ones and forecasting ones accompanied by proposed multidirectional applications of the developed methods in mining and environmental practice. The effect of the works was developing and patenting a few new methods. The effects of works which have been conducted in the last several years were proposed changes in defining water hazard, classifying the hazard and its sources. Classifications of underground water reservoirs, deposits located in the vicinity of reservoirs in closed coal mines and water safety of shafts were proposed. The devised test and evaluation methods have wide practical applications in evaluating water hazard and limiting the hazard, as well as estimating volume of water in reservoirs of closed mines and estimating energy of the water and free methane deposit in the abandoned goafs and mine workings. Their application in hydrogeology plays an important role in estimating volume of water in aquifers built of porous hard rocks. It is also important and applicable in environmental engineering to evaluate volume of water, estimating conditions of its accumulation and flow, and migration of pollution mainly within surface water reservoirs reclaimed with waste rock.
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Oleksyuk, Hanna, and Nataliya Samotiy. "Trends and problems of coal industry development in Ukraine (on the example of state enterprise «Lvivvuhillya»)." Socio-Economic Problems of the Modern Period of Ukraine, no. 1(135) (2019): 3–9. http://dx.doi.org/10.36818/2071-4653-2019-1-1.
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The article deals with the general tendencies and problems of the development of the Ukrainian coal industry in recent years. The main reasons for the problems and reduction of coal production in Ukraine due to the corresponding exhaustion of stocks as a result of long-term exploitation of coal mining enterprises are outlined. In addition, the unsatisfactory condition of the main equipment of the mines and its high level of deterioration and low rates of restoration of fixed assets are determined. The pace of investment and innovation processes in the coal industry of Ukraine today does not correspond to real needs and opportunities for increasing of coal production. The reformation and restructuring of coalmining enterprises is far behind the planned state program measures, including privatization processes, attracting private investment, improving approaches to management, closing unprofitable loss-making mines and building new prospective mines. The article highlights prospective directions of increasing coal mining, both operating mines and the possibility of building new explored reserves of energy and coking coal, in particular, in the Lviv-Volyn coal basin. The main reasons for the unprofitability of coal enterprises, untimely payment of wages to miners, problems of investment and innovation development of the coal industry are outlined. The complexity of the processes of voluntary association of communities in coal regions in the framework of the decentralization reform consists in the presence of environmental problems and the future closure of coal mining enterprises, negatively affecting the overall economic potential of the future united territorial communities. The paper proves that the strategic development of the united territorial communities in the areas of coal deposits (on the example of the Lviv region) is closely connected to the presence of coal mining enterprises there and the construction of new mines there. Strategic directions of innovative development of Ukraine's coal industry, the principles of reform and restructuring of the coal enterprises are defined.
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Czaplicka-Kolarz, Krystyna, Dorota Burchart-Korol, Marian Turek, and Wojciech Borkowski. "Model Of Eco-Efficiency Assessment Of Mining Production Processes." Archives of Mining Sciences 60, no. 2 (June 1, 2015): 477–86. http://dx.doi.org/10.1515/amsc-2015-0031.
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Abstract The paper presents an author’s method of eco-efficiency assessment of mining production processes in hard coal mines, which enables integrating results of evaluating both environmental and economic aspects. The proposed method uses life cycle approach to assess environmental efficiency and the result of operating activities to assess economic efficiency. The comprehensive method of assessing mining production processes was proposed as the Key Performance Indicator (KPI) in hard coal mines in Poland to be used to support decision making in mining companies.
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Krawczyk, Piotr, Marzena Majer, and Joanna Krzemień. "Proposal of Economic Assessment of Hard Coal Mines Operation Conducted in Polish Conditions with the Use of Cost Benefit Analysis." Archives of Mining Sciences 61, no. 4 (December 1, 2016): 875–92. http://dx.doi.org/10.1515/amsc-2016-0058.
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Abstract The paper presents possibilities of an economic evaluation of hard coal mines, using Cost Benefit Analysis (CBA). Suggested methodology for CBA applied to the economic evaluation of a mine allows to conduct a complex evaluation of mine’s functionality in connection to Polish conditions. Additionally to financial aspects, significant from the point of view of the mine’s owner, the paper includes social and environmental effects as a result of mining activities. Proposed methodology has undergone tests which used averaged data obtained from two selected hard coal mines located in the Upper Silesian Coal Basin. Presented results confirm the validity of social costs and benefits, and environmental losses resulting from mining operation, which were included in analysis comprehensively evaluating the efficiency of hard coal mines.
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Bijańska, Jolanta, Aleksandra Kuzior, and Krzysztof Wodarski. "Social Perception of Hard Coal Mining in Perspective of Region’s Sustainable Development." Management Systems in Production Engineering 26, no. 3 (September 1, 2018): 178–83. http://dx.doi.org/10.1515/mspe-2018-0029.
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Abstract This article presents a pilot study on the local community’s social perception regarding coal mines in Upper Silesia. The research was performed in connection with the smog, which was persistent and harmful to residents during the winter months of 2016. The researchers put forward to the local community the following two survey questions: 1. Is the image of coal mines in the eyes of the local community positive or negative? 2. Are coal mines socially responsible and is coal a good energy source? The aim of this article is to indicate the relationship of the local community to the presence of hard coal mines in the neighbourhood and their social role. Also, this work looks to identify the nuisances perceived by the inhabitants of the examined region about mining enterprises and whether these burdens should result in abandonment of hard coal mining. Pilot studies were conducted with the use of a diagnostic survey. The study was carried out in January 2017 on a sample of 267 people, comprising Silesian University of Technology students residing in Upper Silesia. An environmental survey technique was used. The researchers hypothesise that the image of mining and coal as a fuel for the local community is negative and the mines are not socially responsible enterprises. This research shows that the operation of mines is essential for society and its stability as it affects economic, social and energy safety. A large proportion of the respondents defined the image of mining as positive (108 people), but 76 people indicated that the image was rather negative. Most respondents pointed to the benefits of the mine’s operation. Opinions on social responsibility were divided, and most respondents failed to provide concrete examples of social engagement, so the first hypothesis was partly confirmed. Although the respondents pointed to various nuisances resulting from the mining companies operating in their environment, they also recognised significant social aspects related to employability and access to relatively cheap fuel. However, they do not realise the social involvement of mines, which is one of the conditions of sustainable development. Pilot studies allowed for the initial identification of problems and verification of the research tool utilised in this study.
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Wang, Wen Bo, Zhen Hong Guo, Ming Nan Ji, Jun Long Xue, and Liang Zhang. "The Geological Environment Governance of the Coal Gangue and Coal Mining Subsidence Water Area Caused by Mining in Wangzhuang Coal Mine." Advanced Materials Research 955-959 (June 2014): 1732–36. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.1732.
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Combining the governance situation of the main coal gangue heap in Shanxi LuAn group, aiming at different geographical conditions and governance effect of subsidence basin water area caused by coal gangue heap and coal mining at WangZhuang coal mine, based on the concept of ecological management in mines, the paper probes into the geological environmental engineering technology of subsidence basin water area caused by coal gangue heap and coal mining. Then the article analyzes the comprehensive benefits and puts forward to the problems existing in the comprehensive treatment engineering of coal gangue heap and the corresponding solutions.
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LaBranche, Nikky, Cigdem Keles, Emily Sarver, Kelly Johnstone, and David Cliff. "Characterization of Particulates from Australian Underground Coal Mines." Minerals 11, no. 5 (April 23, 2021): 447. http://dx.doi.org/10.3390/min11050447.
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The re-identification of coal workers’ pneumoconiosis in Queensland in 2015 has prompted improvements in exposure monitoring and health surveillance in Australia. The potential consequences of excessive exposure to respirable dust may depend upon the size, shape and mineralogical classes of the dust. Technology has now advanced to the point that the dust characteristics can be explored in detail. This research collected respirable dust samples from four operating underground coal mines in Australia for characterization analysis using scanning electron microscopy (SEM) with energy dispersive X-ray (EDX). The research found multiple mineralogical classes present with their own particle size distributions. The variation between mines appears to have had a larger effect on particle size distribution than the differences in mining processes within individual mines. This may be due to variations in the geologic conditions, seam variation or mining conditions.
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Zientara, Piotr, Anna Zamojska, Grzegorz Maciejewski, and Anna Maria Nikodemska-Wołowik. "Environmentalism and Polish Coal Mining: A Multilevel Study." Sustainability 11, no. 11 (May 31, 2019): 3086. http://dx.doi.org/10.3390/su11113086.
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This paper, drawing on a questionnaire survey conducted among 587 coal miners from six coal mines, seeks to ascertain whether the Polish coal mining industry is committed to organizational greening and whether its employees behave in environmentally responsible ways. Specifically, it explores—by means of hierarchical linear modeling (HLM)—the direct effects of green organizational climates on miners’ pro-environmental conduct at home and at work. We found that climates had a direct effect on employee behavior in and outside the workplace, and that personal environmental values were positively related to the latter variable. However, it has to be admitted that the actual engagement of coal miners in voluntary pro-environmental action at work was not very deep. Crucially, it turned out that, in two coal mines, there were strong green climates, while the rest were weak, which suggests differences in terms of commitment to organizational greening throughout the industry. The present paper explores the significance of the results and highlights the applicability of our methodological approach to the study of employee involvement in organizational pro-environmental action.
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Šofranko, Marian. "Methodology of Risk Analysis of Endogenous Fire in Coal Mines." Advanced Materials Research 962-965 (June 2014): 1153–57. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1153.
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In coal mines one of the most serious safety problems are endogenous fires. Given the specific mining conditions a number of self-heating and spontaneous combustion occurs in coal mining. These activities have a negative effect on the organization of mining operations and require a variety of interventions for their disposal and are a considerable economic burden. At the same time in case of suitable conditions threaten of their transition in the explosion exists. For the application of appropriate measures it is necessary to know the size of the risk of endogenous fires in the coal mine. The paper therefore describes a methodology for risk analysis of endogenous fire in a coal mine, taking into account all relevant factors of production.
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Tkocz, Maria, and Arkadiusz Heder. "Działalność innowacyjna upadającej branży przemysłowej na przykładzie górnictwa węgla kamiennego." Studies of the Industrial Geography Commission of the Polish Geographical Society 20 (January 1, 2012): 134–46. http://dx.doi.org/10.24917/20801653.20.9.
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The coal mining industry in Poland belongs to the branches of industry currently breaking down. It is expressed by the liquidation of mines, whose number in 1989 equalled 70, while in 2010 – only 29; it is also visible in the steady decrease of coal extraction, from 177 million tonnes in 1989 to 77 million tonnes in 2009, whereas employment dropped from 415.7 thousand to 112 thousand, respectively. The decrease in extraction is connected with the process of transformation of the Polish economy and the necessity to adapt to the requirements imposed by the European Union, which required Poland to limit its production of electrical energy from coal. In this context, the situation of the coal mining industry is especially difficult. A question arises, what activities the department of mining has been undertaking in order to cope with these challenges. The article concentrates on innovative activities conducted by the mining industry. They have been presented in their organizational and technological spheres, including the main businesses functioning in the trade, namely Kompania Węglowa, consisting of 15 mines, Katowicki Holding Węglowy, comprising 4 mines, and Jastrzębska Spółka Węglowa, which consists of 5 mines, as well as the remaining mines functioning independently or within structures of other concerns. Innovative activities in the scope of branch management and organization of sales are described. Innovation in terms of technology consists in the introduction of new products, implementation of modern machinery and equipment for exploitation, as well as the monitoring of coal extraction and minimizing the negative impact on the environment.
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Laszlo, Robert, Emilian Ghicioi, Cristian Radeanu, Bogdan Garaliu Busoi, and Stefan Ilici. "Experimentation of a new type of permissible explosive under the specific conditions of the Jiu Valley mines." MATEC Web of Conferences 342 (2021): 02003. http://dx.doi.org/10.1051/matecconf/202134202003.
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At the underground mining works performed in coal, rock and mixed coal & rocks, the process applied almost exclusively is by drilling & blasting. Given that the mines in the Jiu Valley are classified as methane mines, this involves the use of explosives and means of initiation that are safe from methane gas and coal dust. To date, permissible powdered explosives have been widely used. The drilling & blasting patterns were established according to the physical - mechanical and geological characteristics of the rocks in the massif, the type and section of the mining works as well as the restrictions imposed by the methane regime of the mines. In recent years, the widespread use of emulsion explosives has led to the development of permissible types of emulsion explosives. In order to use the permissible emulsion in the coal mines in the Jiu Valley, it was necessary to test in the INSEMEX landfill the safety and functioning parameters as well as to perform underground blasts, in the specific conditions of the methane coal mines. The paper describes the underground experimental blasting works performed, as well as technical and safety recommendations for the use of this type of explosive - permissible emulsion.
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Wang, Shaohui, Wei Zhou, Qingxiang Cai, Xuyang Shi, Xiang Lu, and Boyu Luan. "The Coal Mining Model Under Slippery Slope in Yiminhe Open Pit Coal Mines." Geotechnical and Geological Engineering 37, no. 5 (March 29, 2019): 3727–37. http://dx.doi.org/10.1007/s10706-019-00864-7.
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Plashansky, L. A., S. N. Reshetnyak, and M. Yu Reshetnyak. "Features of functioning of a coal-mining sites of coal mines improved performance." Mining informational and analytical bulletin, S29 (2017): 19–25. http://dx.doi.org/10.25018/0236-1493-2017-12-29-19-25.
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Charak, Sangeeta, Mukhtar A. Sheikh, Anil K. Raina, and D. K. Upreti. "Ecological impact of coal mines on lichens: A case study at Moghla coal mines Kalakote (Rajouri), J&K." Journal of Applied and Natural Science 1, no. 1 (June 1, 2009): 24–26. http://dx.doi.org/10.31018/jans.v1i1.27.
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The data on the frequency, density and abundance of the lichens growing around the Moghla Coal mines, Kalakote has been recorded and compared with lichens growing in a forest area away from the coal mines to work out effect of coal mines on the diversity and distribution of lichens. The data revealed that pollutants released by the open coal mining activities not only effected qualitative distribution but also have effect on the quantitative parameters. Over all 10 species of lichens belonging to 9 genera and 6 families have been recorded from the vicinity of coal mines as compared to 15 species, belonging to 9 genera and 7 families, recorded from the forest area.
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Szlązak, Nikodem, Marek Borowski, Dariusz Obracaj, Justyna Swolkień, and Marek Korzec. "Comparison of Methane Drainage Methods Used in Polish Coal Mines." Archives of Mining Sciences 59, no. 3 (October 20, 2014): 655–75. http://dx.doi.org/10.2478/amsc-2014-0046.
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Abstract Methane drainage is used in Polish coal mines in order to reduce mine methane emissions as well as to keep methane concentration in mine workings at safe levels. This article describes methods of methane drainage during mining used in Polish coal mines. The first method involves drilling boreholes from tailgate roadway to an unstressed zone in roof or floor layers of a mined seam. It is the main method used in Polish mining, where both the location of drilled boreholes as well as their parameters are dependent on mining and ventilation systems of longwalls. The second method is based on drilling overlying drainage galleries in seams situated under or over the mined seam. This article compares these methods with regard to their effectiveness under mining conditions in Polish mines. High effectiveness of methane drainage of longwalls with different ventilation and methane drainage systems has been proven. The highest effectiveness of methane drainage has been observed for the system with overlying drainage gallery and with the parallel tailgate roadways. In case of classic U ventilation system of longwall panel, boreholes drilled from the tailgate roadway behind the longwall front are lost.
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Molnár, József, Ákos Debreczeni, and Richárd Tompa. "Opportunities of re-establishing underground mining in the borsod coal basin in north-eastern Hungary." New Trends in Production Engineering 2, no. 1 (October 1, 2019): 532–40. http://dx.doi.org/10.2478/ntpe-2019-0057.
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Abstract Numerous underground coal mines were in operation in the Borsod coal basin in northeastern part of Hungary until the beginning of this century. The main area of utilization of the mined out coal beside power and heat generation was supplying households with fuel mostly for heating. In the beginning of the 1990ies the power plants in question were shut down for economic, environmental and technical reasons. Consequently all the mines were closed no later than 2004 and thousands of miners lost their jobs. A new perspective of coal mining can be enabled by other ways of utilization of coal, e.g. coal chemistry, etc. Safe and modern equipment and technology enabling high output, clean coal, furthermore high rate of yield are targeted. Opportunity of sustainable underground coal mining in the north-eastern part of Hungary is discussed in the paper. Analysis of the properties of coal deposits using three-dimensional (3D) modelling are used for considering opportunities of new mining operations. Models are being developed.
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Zhironkin, Vitaly, and Juraj Janocko. "Revitalization of Coal Brownfields in Solving Environmental Problems and Structural Development of Kuzbass Economy." E3S Web of Conferences 134 (2019): 02002. http://dx.doi.org/10.1051/e3sconf/201913402002.
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The life cycle of mines lasts from several years to several decades. The closure of the mine occurs when its recourses are completely extracted, or mining is no longer profitable within its leasehold. Most regulatory authorities all around the world require the plan of mines and open-pits closure even before the mining begins, as it must be determined that the site would not pose a threat to the environment or society in future. Depending on the location, the site of mine or open-pit may be used in alternative way after closure or restored to the pre-operational condition. Local authorities increasingly require financial assurance that the funds needed to close mining enterprises will also be available in emergency situations. Special attention is paid to the environmental insurance intended to limit liability related to pollution elimination after mining activities at abandoned fields are over. In close connection with environmental insurance is post-mining – the development of alternative use of mining sites after the closure of mines and open-pits.
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Shah, Kausar Sultan, Mohsin Ali Khan, Sajid Khan, Abdur Rahman, Naseer Muhammad Khan, and Naeem Abbas. "Analysis of Underground Mining Accidents at Cherat Coalfield, Pakistan." International Journal of Economic and Environmental Geology 11, no. 1 (July 7, 2020): 113–17. http://dx.doi.org/10.46660/ijeeg.vol11.iss1.2020.422.
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Coal is the most extensively used nonrenewable energy source worldwide. In Pakistan coal is mostly mined by underground mining methods under poor and unsafe working environment. In this study, accident records of underground coal mines of Cherat coal field were collected and analysis was carried out to understand the consequences, time of occurrence and causes of accidents. Besides, occupation of a victim, responsible party and effects on production were also considered in present study. The relationship between workers’ age and severity rate was examined using regression analysis. The main causes of accidents were the fall of the roof, mine gases, electrocution, oxygen deficiency and slip fall. At Cherat coalfield, for every two mines, there is one fatality and most of the accidents occur due to roof fall between 10:00 am to 12:00 noon. It is due to the stress of production efficiency. Moreover, there is a negligible impact of accidents on coal production at Cherat coalfield from 1994 to 2015. Keywords
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Shah, Kausar Sultan, Mohsin Ali Khan, Sajid Khan, Abdur Rahman, Naseer Muhammad Khan, and Naeem Abbas. "Analysis of Underground Mining Accidents at Cherat Coalfield, Pakistan." International Journal of Economic and Environmental Geology 11, no. 1 (July 7, 2020): 113–17. http://dx.doi.org/10.46660/ojs.v11i1.422.
Full textAbstract:
Coal is the most extensively used nonrenewable energy source worldwide. In Pakistan coal is mostly mined by underground mining methods under poor and unsafe working environment. In this study, accident records of underground coal mines of Cherat coal field were collected and analysis was carried out to understand the consequences, time of occurrence and causes of accidents. Besides, occupation of a victim, responsible party and effects on production were also considered in present study. The relationship between workers’ age and severity rate was examined using regression analysis. The main causes of accidents were the fall of the roof, mine gases, electrocution, oxygen deficiency and slip fall. At Cherat coalfield, for every two mines, there is one fatality and most of the accidents occur due to roof fall between 10:00 am to 12:00 noon. It is due to the stress of production efficiency. Moreover, there is a negligible impact of accidents on coal production at Cherat coalfield from 1994 to 2015. Keywords