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1
Mikolas, Milan, Jozef Mikusinec, Jan Abrahamovsky, Jana Dibdiakova, Yulia Tyulyaeva e Jakub Srek. "Activities of a Mine Surveyor and a Geologist at Design Bases in a Limestone Quarry". IOP Conference Series: Earth and Environmental Science 906, n. 1 (1 novembre 2021): 012073. http://dx.doi.org/10.1088/1755-1315/906/1/012073.
Testo completoAbstract (sommario):
Abstract At the beginning of this article, the main historical milestones of Povážská cementáreň (cement plant) Ladce, a.s. (PCLA) are presented. The main parameters of the Butkov quarry are also specified (sources of the mineral resources) such as the size of the protected deposit area, the mining area, etc. Another part of the article is devoted to proposals for future mining process. There are two projects in connection with the basic investment plan for PCLA modernization. The first one is the preparation of the survey area for limestone - the stages above the current E15 and the other one is the preparation of the survey area for marl - the Moskové locality. Both of these projects were realized in association with Považskň cementáreň, a.s., Ladce and VŠB - Technical University of Ostrava. An integral part of this article based on the project are also simulation of graphic models and diagrams. The last part of the article documents ways of the cooperation of Butkov Quarry and Považskň cementáreň, a.s., Ladce with the public. The management of the Butkov Quarry and Považskň cementáreň, a.s. have come to realize that their cooperation with the public on cultural and social activities helps both, the public and the quarry (include cement plant).
2
Strelnikov, Andrew, Sergey Markov, Ludger Rattmann e Dieter Weber. "Theoretical Features of Rope Shovels and Hydraulic Backhoes Using at Open Pit Mines". E3S Web of Conferences 41 (2018): 01003. http://dx.doi.org/10.1051/e3sconf/20184101003.
Testo completoAbstract (sommario):
Open coal mining companies in Kuzbass (Western Siberia, Russia) constantly face challenges to increase the economic efficiency of mining operations, reduce coal losses and increase profitability. One of the ways to increase the efficiency of open pit mining is to improve the technology for the development of coal-bearing zones of quarry fields on complex structured inclined and steep deposits. At present, the projects for promising deposits have been completed, and a number of operating open pits conduct the development of coal-bearing zones along their entire width by horizontal layers. The excavating and loading equipment for overburden and mining operations in these zones is diverse: quarry rope shovels, hydraulic backhoes or their joint work. When they work together in the coal-bearing zone, the rope shovels extracts the interbeds, and the hydraulic backhoes extract the coal seams. However, such technical solutions are not sufficiently substantiated. The fact is that rope shovels and hydraulic backhoes have their advantages and disadvantages in operating.
3
Cherniaiev, Oleksii, Artem Pavlychenko, Oleksandr Romanenko e Yurii Vovk. "Substantiation of resource-saving technology when mining the deposits for the production of crushed-stone products". Mining of Mineral Deposits 15, n. 4 (dicembre 2021): 99–107. http://dx.doi.org/10.33271/mining15.04.099.
Testo completoAbstract (sommario):
Purpose. Scientific substantiation of the expedient depth of mining the non-metallic deposits of rocky minerals on the basis of mathematical and statistical methods, which will ensure resource-saving and rational use of natural resources. Methods. To solve the purpose set, the following methods are used: graphical-analytical – when optimizing the maximum depth of mining the deposits of building materials, and the method of mathematical modeling – for determining the maximum depth of mining the non-metallic deposits with internal dumping. By means of statistical processing according to systematized types of deposits, the patterns of a change in the maximum depth of mining the basic deposits, depending on the main parameters of the quarry field, have been studied. Findings. A new methodology, which is distinguished by taking into account in-pit dumping, has been developed for calculating the maximum depth of granite quarries, which most of all influences the efficiency of mining operations and the value of economic indicators while ensuring the maximum economic effect with the achievement of a rational maximum depth of mining the deposit. A new, theoretically substantiated methodology has been created for determining the maximum depth of mining the mineral deposits for the production of crushed-stone products while providing the resource- and land-saving during the quarry operation. Originality. For the first time for these deposits, the dependence of their maximum mining depth on the main parameters of the quarry field and the place of internal dumping of overburden rocks has been determined. This has become a determining factor in the appropriate mining of deep non-metallic deposits of building materials with internal dumping, which provides a minimal land disturbance. Practical implications. The research results have been tested and implemented in working projects for mining the Liubymivske, Chaplynske, Pervomaiske, Mykytivske, Trykratske and Novoukrainske granite deposits; as a result of additional mining of mineral reserves, their additional increment in the volume from 1 to 48 million m3 is possible, which will ensure 5-40 years of sustainable operation of the mining enterprise.
4
Nguyen, Tuan Anh, Viet Van Pham, Nam Xuan Bui, Hoa Thu Thi Le, Hai Thi Le, Bao Dinh Tran e Hanh Minh Thi Le . "Modelisation of fractured rock mass for open pit mining in Vietnam". Journal of Mining and Earth Sciences 61, n. 5 (10 ottobre 2020): 80–96. http://dx.doi.org/10.46326/jmes.ktlt2020.07.
Testo completoAbstract (sommario):
In open pit mining, besides the value of the minerals obtained, the cost of waste rock removal determines the efficiency of the mining operation. The paper introduces the rock mass data processing method and modelisation of fractured rock mass to serve the optimal calculation of technological stages in mining. This code is a discrete fracture network (DFN) code that couple geometrical block system construction based on modelisation stochastic with RESOBLOK simulations. The method of three-dimensional modeling (3D) of the fractured rock mass in the quarry is based on the rock mass data, the geometrical parameters of the open pit mine. From there, the rock mass simulation models were used in the analysis of the stability analysis of open pit benches, the optimization of the blast design parameters at overburden benches, project construction materials, and technology projects for block stone extraction. An application in some open pit mines such as quarries of Vietnam is presented.
5
Avezboyev, S., S. Sharipov e K. Xujakeldiev. "Development of projects for recultivation of lands using GIS technologies". IOP Conference Series: Earth and Environmental Science 1138, n. 1 (1 febbraio 2023): 012019. http://dx.doi.org/10.1088/1755-1315/1138/1/012019.
Testo completoAbstract (sommario):
Abstract The necessity of reclamation of disturbed lands as a result of mining is substantiated. Disturbed lands lose all economic importance. In addition, they are a source of pollution of soil and air in the adjacent territories, worsen the living conditions of the population and the appearance of the landscape. The technique of drawing up the working projects for the recultivation of disturbed lands as a result of mining by using the GIS software “Panorama” is considered. The use of this software reduces the time needed to complete a project, reduces the costs and improves the accuracy of project calculations. The use of the technique is shown by the example of the recultivation of disturbed lands in the “Kushbulak” plot of the Karakhtay field. Agricultural reclamation with restoration of pastureland use is recommended. It is planned to create a beach zone with a 30 cm layer of sand in the far northwestern section. It is planned to fill the bottom of the quarry with soil to the design level and create a terrace, as well as work on the land area with a fertile soil layer of 20 cm and planning the surface. The efficiency of reclamation in parallel with the use of a mineral deposit is substantiated.
6
Zarubin, Mikhail, Larissa Statsenko, Pavel Spiridonov, Venera Zarubina, Noune Melkoumian e Olga Salykova. "A GIS Software Module for Environmental Impact Assessment of the Open Pit Mining Projects for Small Mining Operators in Kazakhstan". Sustainability 13, n. 12 (21 giugno 2021): 6971. http://dx.doi.org/10.3390/su13126971.
Testo completoAbstract (sommario):
This research article presents a software module for the environmental impact assessment (EIA) of open pit mines. The EIA software module has been developed based on the comprehensive examination of both country-specific (namely, Kazakhstan) and current international regulatory frameworks, legislation and EIA methodologies. EIA frameworks and methods have been critically evaluated, and mathematical models have been developed and implemented in the GIS software module ‘3D Quarry’. The proposed methodology and software module allows for optimised EIA calculations of open pit mines, aiming to minimise the negative impacts on the environment. The study presents an original methodology laid out as a basis for a software module for environmental impact assessment on atmosphere, water basins, soil and subsoil, tailored to the context of mining operations in Kazakhstan. The proposed software module offers an alternative to commercial off-the-shelf software packages currently used in the mining industry and is suitable for small mining operators in post-Soviet countries. It is anticipated that applications of the proposed software module will enable the transition to sustainable development in the Kazakh mining industry.
7
Kolesnikov, Valery, Alexander Katsubin, Victor Martyanov e Alexander Dobrov. "Features of the Excavation and Loading Equipment of Various Types in the Development of Inclined and Steep Beds". E3S Web of Conferences 105 (2019): 01023. http://dx.doi.org/10.1051/e3sconf/201910501023.
Testo completoAbstract (sommario):
Open pit coal mining enterprises are constantly faced with the task of increasing the economic efficiency of mining, reducing coal losses and increasing profitability. One of the ways to increase the efficiency of open-pit mining is the improvement of the technology for developing coal-bearing zones of quarry fields in sloped and steeply complex (hard-structured) deposits. Currently, projects for promising deposits have been completed, and a number of existing sections are developing coal-bearing zones across their entire width in horizontal layers. Extraction and loading equipment for stripping and winning operations in this area is characterized by a wide variety: rope shovels (also called power or stripping shovels), backhoes and hydraulic shovels or their joint work. When using only rope shovels or only backhoes, they produce an excavation of both interbeds and coal seams. When they work together in the coal-bearing zone, the rope shovel makes a stripping of the interbeds, and the backhoe – an extraction of the coal seams. However, such technical solutions are not sufficiently substantiated. The fact is that rope shovels and backhoe shovels have their advantages and disadvantages in operation.
8
Rada, Constantin, e Florin Faur. "The risk of landslide occurrence in the waste dump belonging to the Ruget quarry and measures to combat it". MATEC Web of Conferences 290 (2019): 11010. http://dx.doi.org/10.1051/matecconf/201929011010.
Testo completoAbstract (sommario):
The mining waste dump has emerged as a result of lignite extraction from Ruget quarry. The waste dump should have 6 steps with a total height of 90 m (as designed), but, at present, only 5 steps have been constructed (in different stages of execution) due to cessation of the activity. Since the stability analysis showed a high degree of instability for some steps there are needed specific redesigning works (slope angle reduction, terraces, levelling etc.) as well as hydrotechnical works (central and side collector drains and collector tubes at the base of the dump). At present, no properly designed works to eliminate the risk of landslide (not even consolidation) and no ecological rehabilitation projects are in progress. Thus, in this paper there are proposed and designed stabilization works (by reshaping, construction of rock support walls at the base of the dump etc.), as well as recultivation with specific plants, which aim at eliminating the geotechnical risks in the area and the reintegration of the dump in the surrounding landscape.
9
Rysbekov, K. B., Dai Huayang, M. B. Nurpeisova, V. H. Lozynskyi, G. M. Kyrgyzbayeva, K. Kassymkanova e А. М. Abenov. "Modern monitoring tools – effective way to ensure safety in subsoil use". Engineering Journal of Satbayev University 144, n. 3 (2022): 34–40. http://dx.doi.org/10.51301/ejsu.2022.i3.06.
Testo completoAbstract (sommario):
Work aim is to carry out geomonitoring of rock mass state, which provides for comprehensive accounting and analysis of all natural and man-made factors, as well as use of methods and control tools developed by authors.Work uses complex method, including: study of mining and geological conditions, structural features of rocks of deposits and conduct of mine surveying observations in mines based on innovative methods and means of geomonitoring developed by the authors. Research materials of geomechanical processes at the mines of Akzhal, Saryoba Sayak and others are presented during projects implementation of «Development of innovative methods for predicting and assessment of rock mass state to prevent technogenic emergencies» and «Comprehensive monitoring of slow deformation processes of the earth's surface during large-scale development of ore deposits of Central Kazakhstan», and also used in the educational process of Satbayev University. As a result of research: methodology for comprehensive assessment of rocks state has been developed, which makes it possible to consider features of geological structure of undermined strata and, thereby, improve quality of geomechanical support for mining operations; design of permanent forced centering point (FCP) for installation of high-precision instruments has been developed, which makes it possible to ensure speed and accuracy of centering, as well as to exclude use of tripods; scientifically substantiated possibility of predicting stress-strain state of rock mass in the studied deposits, i.e. it is possible to determine: tensile strength - σco; clutch - K; density - γ and strength of rocks - f according to the scale of M.M. Protodyakonov; composition of hardening solution from mining waste has been developed to increase stability of sections of ledges of quarry, which has high fluidity, adhesion to rocks and sufficient strength.
10
Aripin, Wahyu Teri, Ernawati Ernawati e Igo Sumarli. "ANALISA RANTAI PASOK MATERIAL USAHA JASA KONSTRUKSI KABUPATEN TASIKMALAYA". Jurnal Tekno Insentif 14, n. 1 (1 aprile 2020): 17–27. http://dx.doi.org/10.36787/jti.v14i1.155.
Testo completoAbstract (sommario):
Abstrak - Pelaksanaan pekerjaan infrastruktur/jasa konstruksi di Kabupaten Tasikmalaya diketahui mengalami beberapa kendala, antara lain pada setiap tahun anggaran terdapat proyek yang mengalami keterlambatan penyelesaian sehingga harus dikenai denda keterlambatan. Dari hasil observasi keterlambatan penyelesaian beberapa proyek tersebut diakibatkan adanya hambatan pada rantai pasok, baik itu rantai pasok bahan baku, tenaga terampil dan perlengkapan. Hambatan ini disinyalir karena perencanaan supply chain yang kurang baik dari semua pihak yang terlibat dalam pengerjaan proyek tersebut. Tujuan dari kajian ini adalah untuk memberikan usulan terhadap pengelolaan rantai pasok usaha jasa konstruksi dalam rangka meningkatkan efisiensi dan efektivitas penyelenggaraan usaha jasa konstruksi di Kabupaten Tasikmalaya. Metode atau tahapan serta program kerja penyelesaian kegiatan Kajian Rantai Pasok Usaha Jasa Konstruksi di Kabupaten Tasikmalaya, akan diuraikan rencana rinci dimulai dari tahapan penyelesaian kegiatan yang akan menghubungkan beberapa variabel sistem rantai pasok usaha jasa konstruksi yang ada di Kabupaten Tasikmalaya. Penelitian ini hanya berfokus pada analisa rantai pasok materialnya saja. Data dikumpulkan melalui observasi, survei, dan wawancara dengan para stakeholders usaha jasa konstruksi di Kabupaten Tasikmalaya. Kemudian untuk validasi data dilakukan FGD sebelum akhirnya dilakukan pengolahan data. Hasil analisa menunjukkan bahwa bahan/material terutama jenis bahan tambang alam/quarry untuk infrastruktur di Kabupaten Tasikmalaya dengan mempertimbangkan permintaan secara keseluruhan diperkirakan akan mengalami defisit pasokan sekitar tahun 2028. Selain itu bentuk rantai pasok yang tidak ideal menjadi faktor terjadinya keterlambatan penyelesaian proyek pekerjaan konstruksi di Kabupaten Tasikmalaya. Sehingga dalam kajian ini dibuat rekomendasi rantai pasok yang ideal dari hasil kolaborasi rantai pasok ideal O’Brien untuk diterapkan pada usaha jasa konstruksi di Kabupaten Tasikmalaya.
Abstract - The implementation of infrastructure works / construction services in Tasikmalaya Regency is known to experience several constraints, including in every budget year there are projects that are late in completion so they must be subject to late fees. Based on the results of observations, the delay in the completion of some of the projects due to obstacles in the supply chain, both the supply chain of raw materials, skilled workers and equipment. This obstacle was allegedly due to poor supply chain planning from all parties involved in the work on the project. The purpose of this study is to provide a proposal for the management of the supply chain of construction service businesses in order to improve the efficiency and effectiveness of the implementation of its service in Tasikmalaya Regency. Methods or stages as well as work programs for completing Construction Service Business Supply Chain Study activities in Tasikmalaya Regency will be elaborated starting from the stage of completing activities that will connect several supply chain system construction service business variables in Tasikmalaya Regency. This research only focuses on analyzing the supply chain of the material. Data was collected through observations, surveys and interviews with stakeholders of the construction service business in Tasikmalaya Regency. Then the data validation is done by the FGD before data processing is finally performed. The results of the analysis show that the materials, especially the type of natural mining / quarry for infrastructure in Tasikmalaya Regency by considering the overall demand is expected to experience a supply deficit around 2028. Besides the non-ideal supply chain shape is a factor in the delays in the completion of construction work projects in Tasikmalaya Regency. So in this study an ideal supply chain recommendation was made from the results of the O'Brien's ideal supply chain collaboration to be applied to the construction service business in Tasikmalaya Regency.
11
Thanh, Nguyen Tuan. "Determining the length-width ratio of the quarry exploited under sea level to recover maximally extraction reserves". Journal of Mining and Earth Sciences 61, n. 1 (28 febbraio 2019): 110–15. http://dx.doi.org/10.46326/jmes.2020.61(1).12.
Testo completoAbstract (sommario):
The boundary of the quarry exploited under sea level has a significant influence on mining design, especially the determination of extraction reserves. For a quarry project, with the same given exploiting depth, the size and shape on the surface of the quarry will yield different mining alternatives and extraction reserves. This paper proposed an approach for determining the length-width ratio of the quarry (with the surface area is rectangular) to achieve maximum reserves corresponding to the quarry boundary.
12
Vangu, Gheorghe Marian, Mihnea Mitrache e Nicolae Dima. "Acquisition of Photogrammetric Data Using Uav – Case Study: Bistriţa Limestone Quarry, Vâlcea". Mining Revue 29, n. 2 (1 giugno 2023): 60–69. http://dx.doi.org/10.2478/minrv-2023-0015.
Testo completoAbstract (sommario):
Abstract Through this paper the project team aimed to demonstrate the utility and feasibility of using flights and photogrammetric methods in surface mining in mountainous areas. Thus, in the first part of the paper, the working principles, the applied methodology, the criteria for selecting the methodology, and the necessary resources are presented, and later the results obtained from the case study from the limestone quarry in Bistrița, Vâlcea are presented. At the same time, the environmental, relief and accessibility conditions in the mining perimeters were identified and practical recommendations were issued regarding the execution of a photogrammetric data acquisition flight in the surface mining operations in the mountain area. This paper indicates risk factors identified in quarries in the mountain area and offers practical solutions to avoid them.
13
Saponaro, Annamaria, Giovanni Dipierro, Emanuele Cannella, Antonio Panarese, Angelo Maurizio Galiano e Alessandro Massaro. "A UAV-GPR Fusion Approach for the Characterization of a Quarry Excavation Area in Falconara Albanese, Southern Italy". Drones 5, n. 2 (18 maggio 2021): 40. http://dx.doi.org/10.3390/drones5020040.
Testo completoAbstract (sommario):
The characterization of a quarry site which is suitable for railway ballast aggregate production represents a big challenge for the mining industry. The knowledge of structural discontinuities within local geological materials is fundamental to guide mining operations, optimize investments, and guarantee quarry security. This research work presents an innovative methodology for the subsurface investigation of a quarry excavation area down to a depth of about 50 m in Falconara Albanese, Calabria, Italy. The proposed methodological approach incorporates photogrammetry, drone technology, and GPR data acquisition and processing. Photogrammetry represents the first step for obtaining a 3D topographical model reconstruction of the whole quarry, helping to detail the acquisition approach and properly plan the subsequent drone survey. In particular, two 120 MHz antennas have been mounted on the drone and two profiles have been acquired above and across the quarry. Results show the presence of fractured material and demonstrate the applicability of the method for identification of areas that are more suitable for railway ballast production. The presented method is therefore capable of detecting subsurficial fractures at a quarry site by means of a relatively fast and cost-effective procedure. Results are achieved within the framework of an industry project.
14
Ivanova, Olga Igorevna, e Aleksey Vasilevich Kozhukhovsky. "FEATURES OF LAND RECLAMATION AND PROTECTION DURING MINING IN THE KRASNOYARSK TERRITORY". EurasianUnionScientists 6, n. 2(71) (2020): 4–8. http://dx.doi.org/10.31618/esu.2413-9335.2020.6.71.609.
Testo completoAbstract (sommario):
The purpose of the study is to influence land resources during mining operations, and the main stages of land reclamation during mining on the example of the Tyradinsky gold Deposit, the "Zolotaya Tyrada" quarry, located in the Yenisei region of the Krasnoyarsk territory. The main factors of impact on land resources in the process of mining the field are considered; the analysis of measures to reduce the negative impact on land resources in the process of mining the field is carried out. The actual height and area of overburden dump not to exceed project, the reconfiguration of dumps allowed us to reduce the impact of mining on the environment, to avoid placing parts of the dumps in the water protection zone of the river Terada, thus there is no need of land allocation to forests of the first group and reduced the amount of removed topsoil. During the reclamation, potentially fertile soils (loam) taken from the quarry were used. There will be no deterioration in the impact on land resources during the liquidation process, due to the short duration of the work and within the existing land allotment.
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Zarubina, Venera, Mikhail Zarubin, Olga Andreeva, Darkhan Akhmetov e Ekaterina Gutnova. "Web-service promotion of SaaS service for mining design". Innovative Marketing 17, n. 4 (1 novembre 2021): 49–61. http://dx.doi.org/10.21511/im.17(4).2021.05.
Testo completoAbstract (sommario):
The market of software for automating the processes of mining enterprises is represented by foreign solutions, which increases the dependence of Kazakhstani enterprises on third-party developers. The marketing strategy for promoting the domestic software product focus on conquering the market segment and increasing competitiveness.The study aims to develop a marketing strategy for promoting the national cloud service “3D-quarry” as a SaaS, taking into account the modern development of Kazakhstan and the globalization of the world’s economy. When writing the matrix of strategic analysis, an analysis of pricing models was used. The possibility of using various measures to promote the service was assessed. A marketing strategy for promoting software for subsoil use is proposed, including tactics of online and offline marketing. The choice of a pricing model for a SaaS product for specialized universities and small design organizations is substantiated. Within the SaaS framework, a set of indicators for evaluating the effectiveness of a marketing strategy is proposed. A comparative analysis of the payback period of the project when using different tariff plans is carried out. Planning horizon – 3 years, planned market share – 5%, conversion rate – 1%, expected payback period – 4.4 years.The developed pricing policy allows obtaining competitive advantages in comparison with the main representatives of the software market: in the segment of small design organizations – at the expense of an acceptable price, in the segment of educational institutions – at the expense of the freemium pricing model. Acknowledgment The study was carried out within the framework of the grant of the Ministry of Education and Science of the Republic of Kazakhstan on the topic IRN AP09561619 “Development of the core of the web service “3D-quarry”.
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Chmykhalova, S. V., V. Yu Grishin e I. A. Pytalev. "Reclamation of Lands Disturbed by the Mining Production Considering the Peculiarities of Land Allocation for the Mining Enterprises". Occupational Safety in Industry, n. 4 (aprile 2023): 28–33. http://dx.doi.org/10.24000/0409-2961-2023-4-28-33.
Testo completoAbstract (sommario):
Mining production is one of the important components of the economic development of the Russian Federation. But in the process of mining, environmental damage is caused, which must be compensated by reclamation (restoration). However, to date, the reclamation rate is inferior to that of extraction. A special feature of the legal regime of subsoil use is the dual form of land allocation: subsoil use (the Law of the Russian Federation «On Subsoil») and land use (the Land Code of the Russian Federation). In this paper, the technologies of parallel reclamation of sections (quarries) are considered, the project of which should be contained in a set of documents for obtaining a license for the development of subsurface resources. Parallel reclamation without using the mined-out space of the quarry involves the use of overburden rocks as materials for the construction of large-scale linear infrastructure facilities of the district, etc. Parallel recultivation using the developed space of the quarry (section) involves filling it with either current overburden rocks or recultivant obtained based on the mineral processing products or technogenic raw materials. At the same time, it is required to ensure that at least one side of the quarry is placed in the limit position in the absence of any communications on it. A prerequisite for the implementation of this approach is mandatory long-term planning. The reclamation plan and its direction should be developed before the start of mining operations in accordance with the needs of the region, and then consistently implemented. The necessary legislative and regulatory framework is available in Russia, but it needs to be finalized, in particular, clarification of the concept of reclamation. In this case, it is interpreted as the return of land to a new economic turnover. Close cooperation and interaction of business with the federal and regional authorities, scientific and design organizations is required to restore the lands disturbed by mining production in accordance with the current laws and regulatory framework in order to develop and implement geotechnological solutions that ensure the return of these lands to a new economic turnover.
17
Salvini, Riccardo, Andrea Ermini, Vivien De Lucia, Luisa Beltramone, Daniele Silvestri, Andrea Rindinella, Stefano Guido, Daria Marchetti e Domenico Gullì. "Stress–Strain Investigation of the Rock Mass Based on Overcoring with CSIRO HI Cell Test and Numerical Modeling: A Case Study from an Italian Underground Marble Quarry". Geosciences 12, n. 12 (30 novembre 2022): 441. http://dx.doi.org/10.3390/geosciences12120441.
Testo completoAbstract (sommario):
The present research illustrates the application of a methodological approach to studying the stress–strain distribution in a marble quarry of the Apuan Alps mining area (Italy). This study has been carried out in the framework of a project involving the University of Siena and the UOC Ingegneria Mineraria—USL Toscana Nord-Ovest, Tuscany Region. This stress–strain analysis aims foremost to monitor the slope stability conditions to guarantee a safe workplace for the personnel involved in mining activities, and to enable more sustainable long-term planning for excavation and production. The involved survey activities are as follows: (i) terrestrial laser scanning; (ii) engineering–geological data mapping; and (iii) in situ marble stress measuring through four CSIRO-type cell tests executed in different locations and at various depths within the underground excavation walls. The gathered data converged into numerical models of the quarry, both in 2D (DEM) and 3D (FEM), calibrated by in situ stress results through a rigorous back analysis assessment using least squares procedures. The created models represent a valuable tool for the identification and securing of risk areas and for future excavation planning in respect of the site efficiency and safety.
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Zuhirmanto, Zuhirmanto, Mardiah Mardiah e Irvani Irvani. "Perhitungan Sumberdaya Batu Granit Pada Quarry PT Mandiri Karya Makmur Dengan Metode Cross Section dan Metode Cut And Fill". MINERAL 3, n. 1 (31 gennaio 2020): 83–102. http://dx.doi.org/10.33019/mineral.v3i1.1580.
Testo completoAbstract (sommario):
Resource calculation studies are an important task in evaluating a mining project. Reserve calculation using the method of cross section and method cut and fill in mining area with extensive Active Block 8 hectares, with elevation limit of mining activity 60 m above sea level. The results of the resource volume of granite using method cross section within the cross section 15, 20 and 25 m is 1.436.967,28 m3, 1.435.887,56 m3 and 1.435.162,056 m3 tonnase 3.736.114,927 tons 3.733.307,656 tons and
3.731.421,345 tons, granite stone resource volume using cut and fill method is 1.437.398,157 m3 with
3.737.235,209 tons tonnage. The results of calculations using the method of cross section with a distance of 15 m smaller cross section 430,877 m3 or 0,03% of the cut and fill method, method of cross section with a distance of 20 m smaller cross section 1.510,597 m3, or 0,11% of the cut and fill method , cross section method with cross-sectional distance 25 m smaller 2.236,101 m3 or 0,16% from method cut and fill. The result of the calculation of the life of mine of PT Mandiri Karya Makmur is based on the calculation of the amount of resources used method cut and fill with a mine life of 31,14 years, cross section method sectional distance of 15 m with a mine life of 31,13 years, cross section method sectional distance of 20 m with a mine life 31,11 years and cross section method of cross- sectional distance of 25 m with mine life of 31,09 years.
19
Ulytsky, О. A., N. O. Dіachenko, О. M. Savluchynskyi e О. V. Gayovyy. "ASSESSMENT OF THE POTENTIAL IMPACT OF INDUSTRIAL PRODUCTION OF FERROUS QUARTZITE OF THE GULIAIPILSKE DEPOSIT ON THE ENVIRONMENT". Mining Geology & Geoecology, n. 2(3) (27 dicembre 2021): 43–64. http://dx.doi.org/10.59911/mgg.2786-7994.2021.2(3).261991.
Testo completoAbstract (sommario):
The paper assesses the potential impact of the industrial extraction of ferruginous quartzite from the Guliaipilske deposit by open pit mining on the environment. The algorithm proposed in the study is based on the knowledge of the basic state of environmental conditions (a collection of basic data) and the studied and calculated indicators of predictive changes. Forecast changes are important for two reasons: first, to form the basis for the assessment, and second, to provide a record of changes in the baseline. These changes will be significant during both development and decommissioning of the project. The work carefully studied, analyzed and calculated the necessary indicators, created three-dimensional models of the current state of the environment and predictive models of landscape changes that will be formed during the extraction of minerals from the Guliaipilske deposit. For the first time, indicators of the potential impact of the mining complex of the Guliaipilske quarry on the earth's surface and landscape, water basin, air basin, flora and fauna, and the impact of mining waste on the environment have been established.
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Tscherepansky, M. M., e A. B. Obukhova. "Hydrogeological foundations of the usage of depleted pits areas". Proceedings of higher educational establishments. Geology and Exploration, n. 5 (2 novembre 2018): 75–77. http://dx.doi.org/10.32454/0016-7762-2018-5-75-77.
Testo completoAbstract (sommario):
The problem of choosing the type of activity, methods and technologies of reclamation of quarry spaces, in the conditions of minimizing the harmful impact on water resources, is determined by a large number of natural and man-made factors. One of the main and determining factors is the state of surface and groundwater, as well as their change in the reclamation of quarries. To solve this problem, it is proposed to create an information and expert system (IES) for selecting a method of reclamation of quarries of IES «Quarry-water-reclamation», based on the natural and man-made conditions of the territories. The purpose of the development of IES «Quarry-water-recultivation» is a reasonable choice of methods, options and technologies for recultivation of the quarry space, based on the physical, geographical, geological, hydrological and hydrogeological conditions of the research area, the method of mining, the conditions of use of surface and groundwater, on the basis of these monitoring systems, as a result of retrospective and predictive geofiltration modeling, taking into account the planned for the implementation of design and water protection solutions and measures, as well as the social - economic conditions of the region. Tasks for the collection and compilation of physicogeographical, geological, hydrological and hydrogeological conditions according to the basin principle, the characteristics of economic activities, the construction of geofiltration, hydrodynamic and computational models, with the further correction of the last solution of the series of predictive tasks, the change of the hydrological and hydrogeological conditions of the area as a result of various variants of recultivation of the quarry, analysis of the current legislation, the requirements of the local authority and wishes of the local people, development of the project of water protection measures of the selected option.
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Słonina, Daria, Grzegorz Kusza e Mateusz Mikołajów. "The proposal to transform an old limestone quarry into a botanical garden with a rainforest zone: a case study". Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 28, n. 1 (27 aprile 2019): 131–42. http://dx.doi.org/10.22630/pniks.2019.28.1.12.
Testo completoAbstract (sommario):
Nowadays, a significant part of cities is tackling the problems with post-mining areas. This manuscript is an original research which shows possibilities of their reclamation. The aim of the article is to present the proposal of developing the closed limestone quarry and creating a botanical garden. The proposed spatial solutions allow for creating a new, tourist and recreation space, maintaining the natural heritage. The work also assumed carrying out a dendrological inventory, in order to determine the existing dendrofl ora. The required spatial, nature and communication analyses, which illustrate the current condition of the area and defi ne further design works, have also been carried out. The main idea of the project was to maintain the particular biodiversity, combined with regional culture and its continuous development. This type of assumption aims not only at protection of endangered species. It also has a great role in shaping the awareness of natural environment of various social groups. The creation of a rainforest substitute in the Opole Botanical Garden was possible through selection of the existing afforestation, considering its adaptation as well as through liquidation and introduction of new trees, shrubs, perennial and climbing plants, which shall emphasise the tropical landscape type by their shapes, texture and colours. The project includes many elements, which reflect the general image of humid rainforests. The planned vegetation in connection with the appropriately selected architecture shall undoubtedly influence visitors’ senses, transferring them to the ‘wild’ and mysterious part of the world.
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Rasyid, Reizano Amri, e Rachma Rizqina Mardhotillah. "STRATEGI MENINGKATKAN DAYA SAING USAHA PT.X MELALUI RENCANA PEMBANGUNAN UNIT STONE CRUSHER BARU DI WILAYAH KABUPATEN PURWOREJO JAWA TENGAH". Media Mahardhika 19, n. 2 (30 gennaio 2021): 328–41. http://dx.doi.org/10.29062/mahardika.v19i2.257.
Testo completoAbstract (sommario):
The smooth supply of broken stone will greatly affect and even determine the speed and accuracy of the completion of a project. The availability of large stones or blondos as raw material to produce broken stones must be guaranteed availability, for this reason it is very important to have a quarry or land containing blondos to maintain the continuity of raw material supply for the stone crusher business. Purworejo Regency has potential in terms of sand and stone mining. Most of the land consists of rock with a percentage of approximately 60% of the total area of Purworejo Regency. The type of raw material that is owned is andesite with a deposit of mining rock which can be exploited for mining for more than 20 years. Because of that potential, it is very important for PT. X to conduct a strategy analysis before constructing a new stone crusher unit. An appropriate business development strategy is needed. The purpose of this research is to create a business development strategy of PT.X by using the SWOT and TOPSIS methods. Based on the alternatives of the SWOT matrix obtained 8 strategies to develop the company and selected strategic priorities with TOPSIS found that market opportunities are very wide open and immediately expand the marketing network with a maximum value of 1.
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Kaźmierczak, Urszula, e Paweł Strzałkowski. "Environmentally Friendly Rock Mining—Case Study of the Limestone Mine “Górażdże”, Poland". Applied Sciences 9, n. 24 (14 dicembre 2019): 5512. http://dx.doi.org/10.3390/app9245512.
Testo completoAbstract (sommario):
Mining activities affect the environment, while proper reclamation and management of areas transformed by these activities can bring about new, and often much better changes in the landscape. This paper presents the project of the reclamation of the limestone mine “Górażdże” and attempts to extend the directions of reclamation of degraded areas left after extracting activities. The aim of this extension is to present reclamation, which can be an environmentally friendly proposal and therefore positively received by the local community. It was proposed to successively enrich the forest and aquatic reclamation directions by adding a natural one. The selection of optimal solutions was based on rational and the most appropriate criteria, such as taking into account, first of all, the existing natural properties in the area of the quarry under analysis and also the possibility of their future protection. On the other hand, due to the social and economic aspects supported by the natural potential, it was proposed to introduce a recreational and tourist direction, which will not interfere with the current forestry and proposed natural development direction. Finally, after the cessation of mining activity in the mining area, it is suggested to create a geopark and to activate geotourism. The proposed solution may significantly affect the social and economic development, while at the same time maintain the valuable natural environment.
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Звягинцева, Алла, Alla Zvyaginceva, Светлана Сазонова, Svetlana Sazonova, В. Кульнева e V. Kul'neva. "SIMULATION OF FUGITIVE EMISSIONS OF DUST AND GASES INTO THE ATMOSPHERE DURING BLASTING OPERATIONS IN THE QUARRIES OF MINING AND PROCESSING PLANTS". Modeling of systems and processes 12, n. 2 (24 ottobre 2019): 17–25. http://dx.doi.org/10.12737/article_5db1e3e5f283f0.11268387.
Testo completoAbstract (sommario):
The issues of the impact of harmful emissions from technological processes and productions in a mining and processing plant are considered. Investigations of the sources of the formation of poisonous twisted gases and dust in the atmosphere of the quarry were carried out The quantitative and qualitative composition of dust and gas emissions emitted during blasting operations is considered. The simulation of fugitive emissions of substances into the atmosphere with the definition of the main parameters of emissions during explosions. Based on the analysis of the calculations, it was revealed that the concentration of harmful substances in emissions is many times higher than the MPC, which creates a critical situation in the working areas of the plant. A comparative analysis of the project of limit-permissible emissions into the atmosphere and actual emissions at JSC Lebedinsky GOK was performed.
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Wilson, Andrew, Paul Bennett, Ahmed Buzaian, Vanessa Fell, Kristian Göransson, Chris Green, Cassian Hall et al. "Euesperides (Benghazi): Preliminary report on the Spring 2001 season". Libyan Studies 32 (2001): 155–77. http://dx.doi.org/10.1017/s0263718900005835.
Testo completoAbstract (sommario):
AbstractThis article reports on the third season of the current project at Euesperides (Benghazi). A programme of geological augering has begun to investigate the presumed location of the ancient harbour and the process by which the harbour and neighbouring lagoon silted up during antiquity. Continued excavation in Area P has revealed two phases of buildings, with a plain pebble floor of the fourth century BC and mixed pebble and irregular tesserae floors of the late fourth/early third century BC. In Area Q work has identified buildings either side of a street, and two phases of city defences; outside the defences excavation has confirmed the continuation of a linear quarry ditch. In Area R the occupation sequence has been elucidated and it seems that the two main phases of purple dye manufacturing activity, using Murex trunculus shellfish, follow the abandonment of a courtyard house. Comprehensive study and quantification of coarsewares and transport amphorae has begun alongside continued study of the finewares, and confirms a wide range of trading contacts. The excavations have also produced evidence for the minting of silver coinage at Euesperides.
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POLOVOV, Boris Dmitrievich, Maksim Nikolaevich VOLKOV e Dmitriy Vyacheslavovich PRISHCHEPA. "Geotechnical monitoring of mining facilities in the system for assessing and ensuring the quality of geomechanical solutions". NEWS of the Ural State Mining University 1, n. 2 (15 giugno 2020): 138–58. http://dx.doi.org/10.21440/2307-2091-2020-2-138-158.
Testo completoAbstract (sommario):
Relevance of the research. Effective monitoring of mining facilities is an essential component of the quality assurance system for geomechanical solutions. Modern systems that regulate monitoring of mining facilities are characterized by good elaboration and efficiency, however, the systems do not provide for formalization of monitoring, which excludes the optimization of monitoring in money and kind Purpose of research. The main reason for this situation is the lack of methods to make a reasonable quantitative assessment of the quality of observations, the potential damage from the effects of deformations and to formalize criteria and models for monitoring optimization taking into account the quality of observations, significance and features of the objects. Research methods. Quality of observations - the initial objective assessment of the quality of monitoring as a whole is defined as the product of three probabilities of detecting predetermined threshold levels of the state of a mining facility: functions of accuracy, frequency of observations and the number of control points. Knowing the quality of observations allows us to move on to formalizing monitoring itself based on the relationship of monitoring reliability (probability of detecting a dangerous situation) with information costs, levels of geomechanical risk, and geomechanical significance (potential damage from the effects of deformations). The latter means that the damage assessment should reflect the negative consequences of mining and construction, including hazard levels for working personnel and the population in the area of the monitoring object. A quantitative pre-drilling estimate of the reliability or probability of detecting dangerous deformations is established in the final phase of monitoring the forecasting of specific conclusions based on observations made about the state of mining facilities and their future trends. Three classes of methods are involved in forecasting: extrapolation, modelling, and examination. In addition to the classical extrapolation techniques based on the theory of time series, new procedures have been developed: for groups of control stations, sequential forecasting under conditions of instability of forecast horizons, forecast horizon correction for planned lead periods, nonparametric forecasting with guarantee coefficients. The possibilities of physical modelling in the aspect of forecasting the consequences of mining reserves in the non-working side of an active quarry with a collapsing system are investigated. For mining structures with increased levels of responsibility (tailing dams, developed areas under development, etc.), the possibilities of combining numerical and simulation modelling with extrapolation forecasting are shown, starting from “preventive” monitoring with the transition to the project forecast in phases of latent and active deformations. The domestic expert system of the All-Russian Research Institute of Mining Geomechanics and Survey has been digitalized in combination with simulation modelling, which ensures the reliability of assessments of the status of horizontal and inclined workings and chambers. Results and their application. Methods for quantitative monitoring performance monitoring are implemented in 12 programs and 33 text files. Typical monitoring models are presented that demonstrate the effectiveness of the adopted approach. The correspondence and convergence of the forecasting results with the results of practical use are shown. Conclusions. Criteria and models for monitoring mining structures are formalized taking into account the quality of observations, the significance and characteristics of the observed objects. Formalization of monitoring with access to its optimization is an obligatory component of the system of assessments and ensuring the quality of geomechanical solutions and is of independent importance.
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Malau, Frans Maduma Wijaya, e Hendri P. Perangin-Angin. "PRODUKSI CRUSHING PLANT PT PULAU LEMON KABUPATEN MANOKWARI". INTAN Jurnal Penelitian Tambang 3, n. 2 (1 aprile 2022): 117–24. http://dx.doi.org/10.56139/intan.v3i2.62.
Testo completoAbstract (sommario):
PT. Pulau Lemon is a mining company especially in gravel quarry. Along with the existence of a project undertaken by the company, the demand for gravel material experiences instability (fluctuation). Therefore, it is necessary to plan the production of gravel well and evaluate the performance of the Crushing Plant. To evaluate the performance of the Crushing Plant, the calculation of the tool capacity, the value of the reduction ratio, tool recovery and work efficiency is carried out. The production plan only refers to the sales history of the last 4 years then averaged over the number of working days. Based on these calculations, it is known that the material intake is 183.43 tons/day, with a hopper capacity of 32.41 tons and a feeder capacity of 244 tons/hour. Crusher 1, 2, and 3 capacities are 502.21 tons/hour, 290.93 tons/hour, and 245.52 ton /hour respectively. The capacity of Conveyor 1 (rock ash) belt is 40.21 tons/day, Conveyor 2 (0.5 - 1 cm) is 35.01 tons/day, Conveyor 3 (1 - 2 cm) is 22.85 tons/day, and Conveyors (2 - 3 cm) of 28.96 ton /day. The value of Jaw Crusher 1 Reduction Ratio is 10.83, Jaw Crusher 2 Reduction Ratio is 5.20, Jaw Crusher 3 Reduction Ratio is 8.8, and Jaw Crusher 4 Reduction Ratio is 8.8. The recovery value at processing time is 69%, and the optimum work efficiency is 54%. The production plan obtained was 1,986.68 tons/day.
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Klojzy-Karczmarczyk, Beata, Janusz Mazurek e Krzysztof Paw. "Possibilities of Utilization of Aggregates and Extractive Waste from Hard Coal Mining at Janina Mine in the Process of Reclamation of Open-pit Mines". Gospodarka Surowcami Mineralnymi 32, n. 3 (1 settembre 2016): 111–34. http://dx.doi.org/10.1515/gospo-2016-0030.
Testo completoAbstract (sommario):
AbstractIn recent years, the economic importance of gangue mined during coal production has changed and it is currently treated more and more often not as waste but as a source of mineral resources for economic use. The overriding objective throughout the reclamation process of open-pit mines associated with the utilization of external material is to make sure that the placement of waste rock on the surface does not cause damage to the environment. The paper presents results of the diagnosis and evaluation of the possibility of filling open-pit mine workings with mining waste or other materials, for example aggregates produced on the basis of gangue, originating in the Janina Mine mining plant (a subsidiary of TAURON Wydobycie S.A.). The study involved aggregate or coal silts from dewatering on the filter presses. The evaluation refers to the legal aspects and takes the requirements of pollution prevention into account, with a particular emphasis on soil, surface water and groundwater. The analysis of the potential impact on the soil and water environment of the project involving reclamation of the open-pit excavation with the use of minerals or waste from coal mining was carried out based on a study of the total content of sulfur and other elements in the samples pierwiastków (As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, V and Zn), as well as of the leaching of components. Moreover, an examination of the coefficient of permeability and porosity was conducted, which allowed the suitability of the material for the construction of insulating layers to be determined. The physical and chemical analyses were conducted on a total of over a dozen samples of waste rock, a byproduct of the enrichment of coal in the Janina Mine plant. The specific studies of the total sulfur content were conducted for the 16 primary samples scattered into 15 fractions each. Moreover, the so-called secondary samples were created, meaning that fine fractions of less than 20 mm and less than 10 mm were rejected. The total content of the selected components was examined for such crafted samples and their concentrations were determined in the leachable form (batch test 1:10). In the case of use of waste rock as an aggregate for quarry reclamation, a comparative analysis was applied to the legal requirements assigned to the mining waste and the quality of soil and water environment. Based on the conducted studies, it has been concluded that the coal silts (filter cakes) are characterized by good insulating properties and can be used for waterproofing objects, especially in the industrial, communications and mining areas. However, coal silts do not meet the quality requirements, mainly due to their slightly increased chlorides content, in addition to being a waste, which in some cases limits the possibility of their use. The best quality parameters were found for the gangue from the Janina Mine (on the basis of which aggregates are manufactured), but deprived of fine fractions. Physical and chemical analyses of the total content of elements in the secondary samples showed that the obtained values are within the allowable ranges determined by appropriate regulations for the vast majority of samples. The limit of 1% was assumed for the sulfur content. The conducted research on the leaching of pollutants indicates that the tested samples do not introduce contaminants exceeding the limit values for the analyzed metals and sulfates. Only single exceedances of the analyzed parameters are observed. The test results allow to conclude that it is possible to obtain a useful product that meets the requirements of environmental protection, but only after the rejection of fine fractions of the waste material.
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Lien, Marianne Elisabeth. "Interruptions: Affective futures and uncanny presences atGiemaš, Finnmark". Polar Record 57 (2021). http://dx.doi.org/10.1017/s0032247420000443.
Testo completoAbstract (sommario):
AbstractThis paper concerns affective relations and unexpected interruptions as the planned expansion of an extractive open-pit mining site gathers momentum. The site is a mountain in Varanger, North Norway, criss-crossed by a sand-coloured meshwork of roads that are part of the current infrastructure of a quartzite quarry. Recently purchased by Chinese investors, the mining company Elkem plans a massive expansion of the operations, which will interrupt a wide range of practices and projects, including the migratory movement of reindeer, as well as their grazing patterns. Known asGiemašamongst Sámi speakers, the mountain is also alluded to as a site of other powers, manifesting as unexpected accidents. In this article, I explore how the planned expansion evokes this contested site as more than a singular mountain, and how divergent epistemic formations interrupt the making of extractive resources in multiple ways.
30
Lien, Marianne Elisabeth. "Interruptions: Affective futures and uncanny presences at Giemaš, Finnmark". Polar Record 57 (2021). http://dx.doi.org/10.1017/s0032247420000443.
Testo completoAbstract (sommario):
Abstract This paper concerns affective relations and unexpected interruptions as the planned expansion of an extractive open-pit mining site gathers momentum. The site is a mountain in Varanger, North Norway, criss-crossed by a sand-coloured meshwork of roads that are part of the current infrastructure of a quartzite quarry. Recently purchased by Chinese investors, the mining company Elkem plans a massive expansion of the operations, which will interrupt a wide range of practices and projects, including the migratory movement of reindeer, as well as their grazing patterns. Known as Giemaš amongst Sámi speakers, the mountain is also alluded to as a site of other powers, manifesting as unexpected accidents. In this article, I explore how the planned expansion evokes this contested site as more than a singular mountain, and how divergent epistemic formations interrupt the making of extractive resources in multiple ways.
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Kløcker Larsen, Rasmus, Jannie Staffansson, Inger-Anne Omma e Rebecca Lawrence. "Avtal mellan samebyar och exploatörer". Samisk senters skriftserie, n. 22 (19 gennaio 2022). http://dx.doi.org/10.7557/10.6421.
Testo completoAbstract (sommario):
In Sweden, there is a growing trend for Sámi reindeer herding districts and developers to enter into negotiated agreements on projects that aim to exploit land and natural resources. These agreements can be viewed as a way for the involved parties to fill a gap in state regulation of environmental licensing and land use planning; specifically the inability of regulation to address the property rights of reindeer herding districts (known as reindeer herding rights). Research conducted in other countries has demonstrated that such private agreements can potentially play a role in integrating Indigenous rights and perspectives into resource governance. The research also demonstrates that they carry considerable risks. Little is known, however, about the consequences of negotiated agreements in the Sámi homeland. This report offers, for the first time, an evaluation of the content of a selection of agreements between Sámi reindeer herding districts and developers in Sweden. The evaluation was conducted from a Sámi perspective, applying a scale and a set of criteria focused on how the agreements affect the ability of herding districts to safeguard reindeer wellbeing. The scale consisted of five levels (+1 to -4) and the criteria were ranked according to views gathered from 12 people, who were either experts on negotiations or holders of traditional knowledge. The study collected 15 agreements from five reindeer herding districts. These agreements concern the following activities: wind power, tourism, car testing, hydropower, quarry mining, and outdoor sporting. To protect the integrity of the reindeer herding districts and respect the confidentiality of the agreements all results are anonymised, which means none of the information disclosed in this report can be traced to specific herding districts, companies, or projects. The results demonstrate that few of the agreements contain clauses that, from the perspective of herding districts, are preferrable for the wellbeing of the reindeer (levels +1, 0 or -1). Instead, agreements are dominated by clauses that are the worst for reindeer wellbeing (levels -3 and -4). The overall conclusion is that the agreements provide limited benefits to reindeer herding, and instead contribute considerable risks. This was especially clear in the agreements on wind power, which contained a high-risk combination of clauses on open consent (allowing undefined projects), gag clauses (wherein the herding districts give up their right to appeal to government or courts), and confidentiality clauses (preventing herding districts from publicly communicating about their experiences). These results support a view that the agreements cement unequal power relations, largely to the benefit of companies. They also indicate that agreements most often, if not always, reflect a “manufactured consent” – that is, herding districts enter agreements because they do not see other alternatives. A challenge that commonly confronts Indigenous groups, globally, is that they do not know what they can legitimately claim in negotiations of agreements. It is therefore critical to highlight positive examples, even if these so far are few. In this study, there are examples where herding districts negotiated the right to potentially pause activities if there is a need to protect reindeer wellbeing, as well as a simple type of revenue sharing. About half of the agreements also contained clauses that required the developers to implement significant measures to minimize harm to reindeer herding, and all five herding districts avoided harmful formulations in the agreements that give the pretence of relinquishing reindeer herding rights. Yet none of the agreements contained clauses meaningfully compensated for the loss of pastures. Clauses about cooperation between the parties focused on information sharing, without requirements placed on the companies to consider the views of the reindeer herders. Moreover, clauses exist that give the companies a unilateral right to renegotiate or terminate the agreement. Clauses also commonly place demands on the herding districts to contribute their time and knowledge without financial compensation. This means, in effect, that reindeer herders are expected to help promote the economic interest of the companies for free. A central conclusion of this report is that reindeer herding districts must widen their perspective on what can be included in agreements. There is no reason why agreements must be limited to issues of economic compensation, as is the case today. There are cases around the world, for instance in Australia and Canada, where agreements include extensive forms of revenue sharing, rights for Indigenous groups to veto potential changes in a project, and rights for communities to bring about the closure of a project if conditions in the agreement are not fulfilled. It is typically in the interests of companies to delimit the ambition of agreements, with arguments such as, “this cannot be included in an agreement”. However, Sámi reindeer herding districts that opt to enter negotiations on private agreements ought to challenge such claims, based on their rights to self-determination, and broaden the scope of what should legitimately be included in agreements.
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Fomin, Sergey, e Maxim Ovsyannikov. "Substantiation of the optimal performance parameters for a quarry during the stage-wise development of steeply dipping ore deposits". Записки Горного института Online first (10 ottobre 2022). http://dx.doi.org/10.31897/pmi.2022.73.
Testo completoAbstract (sommario):
The use of stage-wise schemes in the development of deep quarries is one of the ways to increase the economic efficiency of mining a deposit and determining the optimal stage parameters remains an urgent task. Such parameters are stage depth, bench height, block length, etc. However, there is a wide range of values for these parameters. Therefore, to select the optimal values and evaluate the effectiveness of design solutions, it is advisable to use the net present value, which is an international notion. As a result of the analysis of data on deposits, a large number of variable indicators can be identified that presumably affect the efficiency of mining. The article proposes to divide all parameters of the quarry mining into two types: mine engineering and economic. The importance of each of them is determined by the measure of influence on the net present value. Thus, to assess the measure of influence of mining indicators, the average values of each of them are taken, and as a result of the alternating change of one parameter under study, the measure of its influence on the discounted income received is estimated. The results of the analysis of relevant factors, their evaluation and comparative analysis are important indicators that significantly affect the design decisions made and the effectiveness of the investment project.
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Agarkov, N. B., V. V. Khaustov, A. M. Malikov e N. G. Karpenko. "Optimization of groundwater monitoring network in terms of mass transfer modeling". Gornyi Zhurnal, 22 dicembre 2020, 91–94. http://dx.doi.org/10.17580/gzh.2020.12.21.
Testo completoAbstract (sommario):
In accordance with the ‘Requirements for Monitoring Solid Mineral Deposits’, groundwater monitoring is carried out in the area of the actual mineral deposit and man-made mining facilities, as well as in the zone of significant influence of the field development and other production activities of mining, which affect the subsoil and other components of the natural environment. The development of an underground water monitoring network using mathematical modeling is shown, the existing monitoring network is analyzed, the model of mass transfer of the main pollutant of underground water is developed, and the predictive calculations of mass transfer are performed. The migration model of the test area was created using MT3D program, which allows 3D modeling of mass processes in the flow of underground water. The boundaries of the model area are determined subject to the outline of the catchment area around the quarry, the project increase in depth and the project cut-back in the quarry, as well as to the presence of natural and man-made sources and facilities which can have influence on groundwater regime. The monitoring system allows regular-based observations toward prediction of changes in the condition of underground waters under the influence of the large-scale water withdrawal and other induced and natural factors. The introduction of such monitoring system can enable prevention of prevention of likely changes in the condition of groundwater and proper adjustment of drainage system operation. The numerical modeling data made it possible to optimize the cost of additional inspection well drilling.
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Durán Fernández, José, e Daniel Moreno Ruiz. "Restauración paisajística de Cantera Rosales. Hellín (Albacete, España)". REVISTARQUIS 5, n. 2 (29 novembre 2016). http://dx.doi.org/10.15517/ra.v5i2.27160.
Testo completoAbstract (sommario):
ResumenEl texto describe y dibuja una estrategia de recuperación ecológica de una explotación minera de piedra ornamental en activo, situada en el entorno del parque arqueológico del Tolmo de Minateda, en el Término municipal de Hellín (Albacete, España). En el año 2015, la empresa Areniscas Rosal, propietaria de los derechos de explotación de dicha cantera, encargó a la oficina de Arquitectura y Urbanismo SSS (Spanish Studio of Space) un Plan de Restauración para establecer las directrices básicas de una recuperación paisajística que revierta el impacto de la actividad extractiva en un futuro próximo. El proyecto, fundamentado en la filosofía del Land Art, es una reconstrucción geométrica del terreno por medio de la reutilización de los sobrantes de la propia actividad, para así crear un paisaje totalmente nuevo y contemporáneo. El reciclaje, la re-vegetación y una solución proyectual innovadora fundamentan las directrices de esta intervención paisajística y territorial. Las posibilidades de reutilización y disfrute de este nuevo entorno natural podrán ser variadas y enriquecedoras y solo dependerán de una gestión sensible y respetuosa de la relación del hombre con la naturaleza. AbstractThe former document describes and draws a strategy of ecological recovery of an ornamental stone mine in active, located in the archaeological park environment of Tolmo de Minateda in the municipality of Hellín (Albacete, Spain). Back in 2015, the company Rosal Sandstones, which owns the rights to exploit the quarry, commissioned the Office of Architecture and Urbanism SSS (Spanish Studio of Space) a Restoration Plan in order to establish the basic guidelines for a landscape recovery to revert the impact of mining activity in the near future. The project, based on the philosophy of Land Art, is a geometric reconstruction of the ground by means of reusing the leftovers of the activity itself, to thereby create a totally new and contemporary landscape. Recycling, re-vegetation and innovative design methodology solutions substantiate the guidelines of this landscape and territorial intervention. The possibilities for reusability and enjoyment of this new natural environment can be diverse and enriching and, only depend on a sensitive and respectful management of the relationship between man and nature.