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Journal articles on the topic 'In-Pit Crushing and Conveying'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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1

Paricheh, Morteza, and Morteza Osanloo. "Concurrent open-pit mine production and in-pit crushing–conveying system planning." Engineering Optimization 52, no. 10 (November 6, 2019): 1780–95. http://dx.doi.org/10.1080/0305215x.2019.1678150.

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2

Kizil, Mehmet S., Edward Hay, Peter Knights, and Micah Nehring. "Ultimate pit limit determination for fully mobile in-pit crushing and conveying systems." International Journal of Mining and Mineral Engineering 10, no. 2/3/4 (2019): 111. http://dx.doi.org/10.1504/ijmme.2019.10026187.

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3

Hay, Edward, Micah Nehring, Peter Knights, and Mehmet S. Kizil. "Ultimate pit limit determination for fully mobile in-pit crushing and conveying systems." International Journal of Mining and Mineral Engineering 10, no. 2/3/4 (2019): 111. http://dx.doi.org/10.1504/ijmme.2019.104444.

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4

Kammerer, Brian A. "In-pit crushing and conveying system at Bingham Canyon Mine." International Journal of Surface Mining, Reclamation and Environment 2, no. 3 (January 1988): 143–47. http://dx.doi.org/10.1080/09208118808944149.

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5

Santos, Joseph A. Dos, and Zivorad Stanisic. "In-pit crushing and high angle conveying in Yugoslavian copper mine." International Journal of Surface Mining, Reclamation and Environment 1, no. 2 (January 1987): 97–104. http://dx.doi.org/10.1080/09208118708944108.

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6

Liu, Dingbang, and Yashar Pourrahimian. "A Framework for Open-Pit Mine Production Scheduling under Semi-Mobile In-Pit Crushing and Conveying Systems with the High-Angle Conveyor." Mining 1, no. 1 (April 13, 2021): 59–79. http://dx.doi.org/10.3390/mining1010005.

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In-pit crushing and conveying (IPCC) systems have drawn attention to the modern mining industry due to the numerous benefits than conventional truck-and-shovel systems. However, the implementation of the IPCC system can reduce mining flexibility and introduce additional mining sequence requirements. This paper investigates the long-term production scheduling and the crusher relocation plan of open-pit mines using a semi-mobile IPCC system and high-angle conveyor. A series of candidate high-angle conveyor locations is generated around the pit limit, with a crusher located along each conveyor line. Each conveyor location is solved independently by an integer linear programming model for making production scheduling and crushing station decisions, aiming to maximize the net present value (NPV) considering the material handling and crushing station relocation costs. The production schedule with the highest NPV and the associated conveyor and crusher location is considered the optimum or near-optimum solution.
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7

Minkin, Dr Andrey, Dr Franz M. Wolpers, and Dr Torsten Hellmuth. "NEW STEEP CONVEYING CONCEPT FOR OPENCAST MINES USING AN IN-PIT CRUSHING AND CONVEYING SYSTEM (IPCC)." Ugol', no. 05 (May 8, 2018): 34–38. http://dx.doi.org/10.18796/0041-5790-2018-5-34-38.

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8

Hay, E., M. Nehring, P. Knights, and M. S. Kizil. "Ultimate pit limit determination for semi mobile in-pit crushing and conveying system: a case study." International Journal of Mining, Reclamation and Environment 34, no. 7 (July 23, 2019): 498–518. http://dx.doi.org/10.1080/17480930.2019.1639006.

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9

Osanloo, Morteza, and Morteza Paricheh. "In-pit crushing and conveying technology in open-pit mining operations: a literature review and research agenda." International Journal of Mining, Reclamation and Environment 34, no. 6 (January 18, 2019): 430–57. http://dx.doi.org/10.1080/17480930.2019.1565054.

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10

Freeh, E. J., and C. D. Iles. "Experience with Operating and Controlling an In-pit Portable Crushing and Conveying System." IFAC Proceedings Volumes 18, no. 6 (July 1985): 153–58. http://dx.doi.org/10.1016/s1474-6670(17)60502-0.

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11

Mikhailov, A. V., O. Z. Garmaev, D. R. Garifullin, and YA Kazakov. "A potential application of in-pit crushing-conveying and dewatering system in peat mining." IOP Conference Series: Earth and Environmental Science 378 (November 13, 2019): 012086. http://dx.doi.org/10.1088/1755-1315/378/1/012086.

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12

Abbaspour, Hossein, Carsten Drebenstedt, Morteza Paricheh, and Robert Ritter. "Optimum location and relocation plan of semi-mobile in-pit crushing and conveying systems in open-pit mines by transportation problem." International Journal of Mining, Reclamation and Environment 33, no. 5 (February 20, 2018): 297–317. http://dx.doi.org/10.1080/17480930.2018.1435968.

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13

Nehring, M., P. F. Knights, M. S. Kizil, and E. Hay. "A comparison of strategic mine planning approaches for in-pit crushing and conveying, and truck/shovel systems." International Journal of Mining Science and Technology 28, no. 2 (March 2018): 205–14. http://dx.doi.org/10.1016/j.ijmst.2017.12.026.

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14

Rylnikova, M. V., A. V. Vlasov, and M. A. Makeev. "Justification of Conditions for Application of Automated Control Systems for Surface Mining during Construction of In Pit Crushing and Conveying System using Simulation Modeling." Mining Industry Journal (Gornay Promishlennost), no. 4/2021 (August 25, 2021): 106–12. http://dx.doi.org/10.30686/1609-9192-2021-4-106-112.

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The simulation modeling approach described in the article is intended to assess the efficiency of geo-technologies and can be applied: 1) to evaluate the implementation of smart geotechnologies with digital transformation of the mining systems; 2) to select the mining and transportation management system as well as the preferred logistic scheme of the mine. This approach makes it possible to make more reasonable investment decisions based on an objective quantitative assessment. Simulation modeling should be based on the results of geotechnical justification of structural parameters of the pit walls and benches in operating and limit states. Transition to automated systems to control smart geotechnologies in programmable mode and timely inclusion of the In Pit Crushing and Conveying (IPCC) technology into the transport scheme helps to: 1) remove people from the working zones inside the open pit; 2) significantly reduce the ore mining costs; 3) advance to a higher level of technology in developing the deposits; 4) process ores that were previously considered substandard. As an example, the assessment results are provided of the implementation of new rock mass transportation technologies at the Codelco copper mine in Chile in the Radomiro Tomic open pit.
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15

Bernardi, Louis, Mustafa Kumral, and Matt Renaud. "Comparison of fixed and mobile in-pit crushing and conveying and truck-shovel systems used in mineral industries through discrete-event simulation." Simulation Modelling Practice and Theory 103 (September 2020): 102100. http://dx.doi.org/10.1016/j.simpat.2020.102100.

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16

Kittipongvises, Suthirat, Orathai Chavalparit, and Chakkaphan Sutthirat. "Greenhouse Gases and Energy Intensity of Granite Rock Mining Operations in Thailand: A Case of Industrial Rock-Construction." Environmental and Climate Technologies 18, no. 1 (December 1, 2016): 64–75. http://dx.doi.org/10.1515/rtuect-2016-0014.

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Abstract This paper is aimed to systematically assess greenhouse gases (GHGs) and energy intensity of the granite rock mining operations in Thailand and also identify a range of feasible options to minimize their GHG emissions. Mining factories A, B and C, located in the Eastern region of Thailand, were selected as research case studies. The results indicated that the 3-year average of GHGs emissions from factories A to C was 3387 718 kgCO2e per year with approximately 2.92 kgCO2e per ton of granite rock produced over 2012 to 2014. Of this, the carbon intensity of grid-electricity consumption for the crushed rock production was 1.84 kgCO2/kWh. Diesel fuel combustion for transport activities in the mining factories was the greatest contributor to GHGs emissions (68 %) compared to the purchased electricity and explosion process, with 31 % and 1 %, respectively. In-Pit Crushing and Conveying (IPCC) installation, haul truck payload optimization and management, and reduction in tire rolling resistance have shown potential to reduce carbon emissions accounted for 20 % to 70 %.
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17

Nunes, Rodrigo Augusto, Homero Delboni Junior, Giorgio de Tomi, Cecília Beatriz Infante, and Bladen Allan. "A decision-making method to assess the benefits of a semi-mobile in-pit crushing and conveying alternative during the early stages of a mining project." REM - International Engineering Journal 72, no. 2 (June 2019): 285–91. http://dx.doi.org/10.1590/0370-44672018720109.

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18

Li, Cheng Qun, and Kai Yuan Hou. "Application of PLC in the Production Line of Ore." Advanced Materials Research 562-564 (August 2012): 1844–47. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1844.

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This article describes one of production lines of automatic control in ore production, which consists of feeding, crushing and conveying equipments and so on. It elaborates the composition and process of the entire system. According to control requirements in this system, electrical control system is designed, which chooses PLC as the core component of it, including hardware circuit and software programming. Furthermore, some anti-interference measures are taken in order to improve the reliability of the system.
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19

Rudianto, Supris, and Tikto Hartanto. "STRATEGI TRANSPORTASI BATUBARA – MEMBANDINGKAN OVERLAND CONVEYING DENGAN TRUK PENGANGKUT BATUBARA." Prosiding Temu Profesi Tahunan PERHAPI 1, no. 1 (March 29, 2020): 147–58. http://dx.doi.org/10.36986/ptptp.v1i1.58.

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ABSTRAK Pada tahun 2005 PT Kaltim Prima Coal (KPC) melakukan kajian proyek peningkatan bisnis untuk mengembangkan operasi tambang Sangatta. Kajian difokuskan pada peningkatan kapasitas produksi 34-35 Metrik Ton per Tahun (JTPT) saat itu, menjadi 44 JTPT dan sampai dengan 70 JTPT. Inisiatif pengurangan biaya produksi karena meningkatnya jarak tempuh , kenaikan harga bahan bakar dan kelangkaan ban pada tahun 2005 dimasukan sebagai fariabel eksogen penting dalam kajian ini. Kajian yang dilakukan meliputi strategi pemilihan transportasi batubara dengan cara membandingkan moda transportasi batubara mengunakan conveyor system terhadap mode pengangkutan menggunakan truk. Hasilnya mode transportasi conveyor system lebih unggul dari sisi produktifitas, kontinuitas produksi, umur layanan operasi yang lebih lama, biaya operasi & maintenance yang lebih rendah dan lebih handal untuk lokasi tambang yang terbatas dengan kecuraman medan sampai pada tingkat 300-350. Dengan dasar pertimbangan teknis dan ekonomis, proyek peningkatan bisnis ini ditindak lanjuti dengan melakukan tujuh proses kajian secara internal. Tahapan berikutnya adalah analisa keekonomian dengan memasukan lima belas variabel untuk menentukan satu dari 3 alternatif pembiayaan yang tersedia. Hasil analisa dari 3 alternatif tersebut akan diambil keputusan dengan membandingkan dua parameter utama yakni Net Present Value dan Internal Rate Return. Analisa ekonomi dipertajam dengan uji sensitifitas untuk melihat respond NPV terhadap pengaruh variabel produksi, pasokan pembangkit listrik, biaya modal, dan biaya truk pengangkut. Rangkaian kajian dan evaluasi tersebut menghasilkan keputusan pembangunan Melawan Crushing Station & Western Overland (OLC) yang berlokasi ditengah lokasi tambang Melawan area dengan disain dasar berkapasitas rata-rata 4.000 ton per jam. Kata Kunci: Strategi transportasi batubara, Melawan Crushing Station & Western OLC, pertimbangan aspek teknis dan analisis ekonomis ABSTRACT KPC conducted a business improvement project study to develop Sangatta mining operations in 2005. The study focused on increasing production capacity from 34 to 35 Metric Tons per Year (MTPY) to 44 MTPY and up to 70 MTPY. Initiatives to reduce production costs due to increased mileage, rising fuel prices and tire scarcity in 2005 were included as exogenous variables in this study.The study focused on strategy for selecting coal transportation modes by comparing conveyor transporting system to trucking mode. The study resulted that the conveyor system transportation mode was superior in terms of productivity, production continuity, longer service life cycle, lower operating & maintenance costs and more reliable for finite mine sites with steepness of terrain up to the level of 300-350.Based on technical and economic considerations, this business improvement project was followed up by conducting seven steps internal process study. The following stage was an economic analysis by entering fifteen variables to determine the best one from the 3 available financing alternatives.The results of the analysis of the 3 alternatives will be decided by comparing the two main parameters namely Net Present Value and Internal Rate Return. Economic analysis is sharpened with sensitivity testing to see NPV respond against the influence of production variables, power generation supplies, capital costs, and cost of transporter trucks. The course of studies and evaluations concluded to construct of Melawan Crushing Station & Western Overland. It would be placed at center of the Melawan mine site, with a basic design average capacity was 4,000 tons per hour. Keyword: coal transportation strategy, Melawan Crushing Station & Western Overland Conveyor, technical aspect consideration and economical analysis
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20

Atrushkevich, Victor, Nam Bui Juan, Artem Atrushkevich, and Alberto Rodriguez. "Resource-Saving Quality Management Systems of Coal Products Using the DSKA-4m Сomplexes." E3S Web of Conferences 41 (2018): 01022. http://dx.doi.org/10.1051/e3sconf/20184101022.

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The article presents developed and widely implemented processing technologies of mining enterprises (crushing, classification, averaging adjustment screen composition, dehydration, loading, storage, reducing the ash content and moisture source)-based complexes DSKA. Offers innovative technical software allows mining companies and companies to create and consumers, in accordance with fluctuations in the market, to adjust flows of products providing a wide range of quality. Coal crushing and classification equipment is widely used in coal mines, sea and river ports, railway terminals and large coalstorage yards. However, drawbacks of the conventional technologies used in crushing (jaw, cone, rotary and rolling crushers), sizing (on low-frequency high-amplitude screens) and conveying (belt conveyors) worsen efficiency of production and decrease its attractiveness as investment. Besides, the preparation plants in service cannot, as a rule, ensure the integrated and adjustment-flexible approach to providing the desired quality of coal end product.
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21

Kuracina, Richard, and Zuzana Szabová. "Design of Dust Dispersion System for Explosion Chamber KV-150 M2." European Journal of Engineering Research and Science 3, no. 12 (December 12, 2018): 32–35. http://dx.doi.org/10.24018/ejers.2018.3.12.988.

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Dust explosions are a major hazard in many industrial processes. In operations such as crushing and grinding, conveying, classifying and storage, an explosion may occur in the presence of combustible dusts or powders. Such explosions can result in loss of production, process equipment and quite possibly human life. This paper is oriented on design of dust dispersion system for explosion chamber KV-150 M2. The explosion chamber KV-150 M2 is designed to measure the explosion parameters of dispersed dusts.
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22

Pan, Feng, Bin Hu, Xin Luo, Mengyu Guo, and Haomeng He. "Design and Testing of a Shearing and Breaking Device for Mulch Film and Cotton Stalk Mixtures." Transactions of the ASABE 64, no. 2 (2021): 545–55. http://dx.doi.org/10.13031/trans.14261.

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HighlightsThis article presents a shearing and breaking device for mulch film and stalk mixtures after mechanized recovery.The focus is on a curved V-shaped mechanism with three-dimensional precompression and shearing functions.The device can efficiently and continuously perform film crushing, stalk crushing, and entanglement breaking.The crushed film and stalk mixture is conducive to material separation, further treatment, and recycling.Abstract. Because the mixture of mulch film and stalks collected in harvested cotton fields in Xinjiang, China, cannot be separated mechanically, a technical solution for shearing and breaking is proposed. This study designed a shearing and breaking device for film and stalk mixtures that can continuously perform film crushing, stalk crushing, and entanglement breaking. The design focuses on a curved V-shaped shearing mechanism, which provides three-dimensional shearing and improves the crushing of film and stalks. The linear speed of the conveying rollers (x1), the working angle of the shearer (x2), and the speed of the shearer spindle (x3) were selected as influencing factors, and the crushed film rate (Ph), crushed stalk rate (Gh), and broken entanglement rate (Kh) were used as evaluation indexes in quadratic orthogonal rotation combination tests. The test results were analyzed with Design-Expert software, and a regression model between each factor and the evaluation indexes was established to analyze the significance of each factor’s influence. The results showed that the influences of the three factors on Ph in descending order were x3, x2, and x1. The order of influence on Gh and Kh was x3, x1, and x2. The optimization module in the software was used for parameter optimization, and the optimal combination of working parameters of the device was x1 = 0.98 m s-1, x2 = 153°, and x3 = 753 r min-1. The optimized parameter combination was tested and verified, and the results were Ph = 77.28%, Gh = 87.78%, and Kh = 85.30%. The test results are basically consistent with the predicted values, and the optimized working parameters are reliable and can meet the requirements for the shear fracture of film and stalk mixtures. This research provides a technical reference for the cutting and crushing of complex mixed solid materials. Keywords: Agricultural machinery, Curved V-shaped moving knife, Design, Film and stalk mixture, Parameter optimization.
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23

Wei, ZhongCai, HongWen Li, ChuanZhu Sun, Guoliang Su, WenZheng Liu, and Xueqiang Li. "Experiments and Analysis of a Conveying Device for Soil Separation and Clod-Crushing for a Potato Harvester." Applied Engineering in Agriculture 35, no. 6 (2019): 987–96. http://dx.doi.org/10.13031/aea.13283.

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Abstract. Bruising and damage losses are the most important key factors restricting the potato harvesting mechanization. The experimental work was conducted on an in-house conveying device for soil separation and clod-crushing testbed, which could be used to set a constant potato-soil proportion. In this work, a preliminary study was carried out to clarify the soil cushioning the potatoes travelling on separation sieve at different separation stages. Impact characteristics and movement processes were also studied. An impact recording device and high-speed camera technology were employed to obtain the instantaneous dynamics of the potato-soil mixture. The peak acceleration does not exceed 28.20 g when the potato-soil proportion increases from 18.07% to 38.55%; the peak acceleration reached 105.33 g when the potato-soil proportion was 100%. The number of impacts and peak impact acceleration are positively correlated with the vibration intensity of shaking rubber wheel under the condition of the same potato-soil proportion. It is noteworthy that the influence of the potato-soil proportion on the number of impacts and the peak impact acceleration was more obvious than that of the running speed of the separation sieve. This work provides a technical reference for the further investigation of bruising minimization and potato-soil separation technology. Keywords: Impact recording, Motion characteristics, Potato, Potato-soil proportion, Potato-soil separation.
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24

Huo, Jun Zhou, Shi Qiang Yu, Tao Li, and Jing Yang. "The Theoretical Analysis of Chain Drive System for Heavy Duty Apron Feeder." Advanced Materials Research 694-697 (May 2013): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.225.

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Taking a certain type of heavy duty apron feeder inmobile crushing station as the object of study, this paper proposed a five-barmechanism to research the velocity fluctuation problems of chain drive systemin an apron feeder. The effects of impulsive loads were analyzed, and amechanics model of meshing area was proposed. The research results are asfollows. 1. In the conveying direction, the number of teeth and sprocket pitch hasthe most influential effect on the vibration. 2. External impulsive loads causea significant increment of chain force, in particular the loads caused by largematerials. 3. The teeth and rollers near the tight-side chain play a major rolein transferring the torque, and the initial pressure angle affects their stressconditions immensely.
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25

Huo, Junzhou, Shiqiang Yu, Jing Yang, and Tao Li. "Static and Dynamic Characteristics of the Chain Drive System of a Heavy Duty Apron Feeder." Open Mechanical Engineering Journal 7, no. 1 (November 29, 2013): 121–28. http://dx.doi.org/10.2174/1874155x01307010121.

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Mechanical models of a chain drive system are proposed and applied to the theoretical analysis of chain drive system of a certain type of heavy duty apron feeder in mobile crushing station, including a five-bar model discussing the speed fluctuation problems of the chain drive system, an elastic collision model probing the effects of impulsive loads and a model of meshing area revealing the stress of chain links. Theoretical analysis indicates that the teeth number and sprocket pitch have the most influential effect on the vibration in the conveying direction; external impulsive loads are caused a significant increment of chain force, especially when loads caused by large materials; the initial pressure angle affects the roller chain stress conditions immensely. Then, multi-body dynamics models are established for the verification of theoretical results and dynamic simulation. Simulation results are in good agreement with the theoretical results and illustrate that impulsive loads affect chain tension significantly.
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26

Terezopoulos, N. G. "Continuous haulage and in-pit crushing in surface mining." Mining Science and Technology 7, no. 3 (October 1988): 253–63. http://dx.doi.org/10.1016/s0167-9031(88)90777-3.

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27

Bao, Haiming, and Ruixin Zhang. "Study on Optimization of Coal Truck Flow in Open-Pit Mine." Advances in Civil Engineering 2020 (June 23, 2020): 1–13. http://dx.doi.org/10.1155/2020/8848140.

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A semicontinuous process system consisting of a single-bucket excavator, truck, crushing station, and belt conveyor is the main coal mining process system of a large-scale hard coal open-pit mine. Through analyzing the coal mining production process, the key issues of coal mining truck flow optimization are obtained. Statistical method of using triangular fuzzy numbers analyzes the key time parameters of coal mining truck flow. Taking one shift, the minimum expected value of number of trucks, as the objective function, the fuzzy expectation of the coal mining semicontinuous process system is established with the constraints of the truck flow continuity at the loading and unloading point, the production capacity of the electric shovel, the production capacity of the crushing station, coal quality, and coal mining production tasks. The truck flow planning model is solved using particle swarm intelligence algorithm. The simulation results show that the result of truck flow planning can effectively reduce truck number, truck dispatching number, transportation costs, and truck queuing. The fuzzy expected truck flow planning model established by the study is suitable for solving the problem of optimizing and matching the production capacity in the process which links electric shovel, truck, and crushing station. It can effectively improve the production efficiency of electric shovel mining, truck transportation, and crushing station.
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28

Bochkov, V. S., and S. D. Dyagilev. "Analysis of one-stage and two-stage crushing of shale in jaw crusher ShchD 10M for manufacture of terrazzo tiles." Mining informational and analytical bulletin, no. 7 (May 20, 2020): 78–84. http://dx.doi.org/10.25018/0236-1493-2020-7-0-78-84.

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The article presents the experimental research data on oneand two-stage crushing of shale from the Rezh open pit mine in the Ural Region in jaw crusher ShchD 10M with a complex-moving jaw. Shale is a metamorphic rock of low rank, composed mainly of dark-color minerals and quartz or dark-color minerals and feldspar (except for amphiboles). Crushed shale is widely used in construction for coating of building sides, in production of roofing and in manufacture of tiles. For this reason, it is important for the theory and practice to determine rational parameters of shale crushing. The implemented studies into shale crushing show that as against the one-stage process, the two-stage crushing yields much more fines and reduces the yield of coarse (uncrushed) particles. The one-stage crushing offers acceptable coarseness of particles, as well as simplifies the process and allows less number of crushers to be involved. The productivity and time of crushing, as well as weight of shale samples are determined. Using testing screen A 20, size distribution of crushed shale was carried out, and the bar charts of the size distribution were constructed. Advantages and disadvantages of one-and two-stage crushing in a jaw crusher are described.
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29

Zhang, Yuan, Chang Ge, Yu Lin Li, Ming Fu Li, Wen Yang Luo, and Guang Yu Tan. "Design and Experimental Analysis of Pepper Fruit Preprocessing Machine." Advanced Materials Research 1061-1062 (December 2014): 687–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.687.

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Existing pepper fruit peeling machine for peeling incomplete, improper peeling force, pit protective film damaged, lead to a high impurity rate, pit crushing, unsatisfactory color and other issues. In order to solve these problems, manufacturing pepper fruit preprocessing machine based on analysis of pepper machining process. The machine achieves pepper fruit surface damaged by differential principle, work in with pepper peeling machine to peel completely.
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30

Annakulov, Tulkin. "Development of technological schemes for open-pit mining of deposits using “mobile crushing-reloading-conveyor complexes”." E3S Web of Conferences 201 (2020): 01010. http://dx.doi.org/10.1051/e3sconf/202020101010.

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This article analyses the use of cyclic-flow technology schemes with mobile crushing and reloading complexes in open cast mining. An analysis of the application of cyclic-flow technology schemes with mobile crushing and reloading complexes in open cast mining shows that the main directions of its radical improvement are the development, creation and implementation of fundamentally new mining transport equipment and technological schemes for its quarries, which include: “mobile excavators crushing and transhipment plants and conveyor systems". Technological schemes for the development of rocks with an end arrangement of mobile complexes using a single bucket excavator and conveyor transport, with an end arrangement of mobile complexes and an increased width of the working platform during conveyor transport, with an end arrangement of mobile complexes and the presence of a mobile interstage loading crane with sequential mining at three horizons, a methodology has been developed for determining the working time and annual productivity of mobile crushing and handling conveyor complexes and a new technological scheme for the development of overburden ledges using mobile crushing and handling conveyor complexes. To reduce the time for idling the complex and reduce the number of exit ledges, a new technological scheme for the development of overburden ledges with the use of mobile complexes is recommended. As a result of the calculations according to the developed method, when working out two benches with different block lengths, the dependence of the annual productivity of the complex on the block length was established.
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31

Amegbey, N., B. O. Afum, S. Ndur, and E. Coffie-Anum. "Impact Assessment of Atmospheric Pollutants Emissions from Mining Operations at Ghana Managanese Company Ltd." Ghana Mining Journal 16, no. 2 (December 20, 2016): 65–72. http://dx.doi.org/10.4314/gm.v16i2.9.

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Atmospheric pollutants diffusion study was conducted around the operational sites and immediate neighbouring communities of Ghana Manganese Company (GMC). The pollutants are emitted by sources associated with the main operations and activities of the mine including on-bench rock drilling and blasting, material excavation and hauling, vehicular movements and mine machinery exhaust emissions, as well as crushing of blasted rocks. Methodologies involving computerised dispersion modelling was used to estimate near-field ambient pollutant impacts on neighbouring Tarkwa-Banso community, at 400 m from the Mine’s nearest operational site (Pit C North). The community is located in the dispersive fan of North to the East-South-Eastern part of the mine site. Measured airborne particulates (PM10 and TSP) concentrations in the Tarkwa-Banso community were below Ghana EPA’s permissible limits of 70 µg/m3 and 150 µg/m3 respectively. The predicted monthly concentrations of the airborne particulates (PM10 and TSP) at 400 m buffer from the crushing plant were greatly lower than the permissible regulatory limits. With effective dust mitigation measures, the predicted PM10 and TSP dust concentrations emanating from drilling, blasting, loading and hauling activities at Pit C North were also generally lower than the regulatory requirement. All the predicted monthly concentrations of NOx and SO2 at the 400 m buffer from Pit C North were significantly lower than the allowable regulatory requirement of 60 µg/m3 and 100 µg/m3 respectively. The study indicates that, the operation of the crushing plant together with the general mining operations at Pit C North in the mine has no significant impact on Tarkwa-Banso community. Keywords: Impacts, Particulates Matter, Concentration Levels, Environment, Prediction
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32

Azaryan, Volodymyr. "The Methodology of Use of the Mobile Crushing-and-Sorting Radiometric Complex in the Iron-Ore Pit." Solid State Phenomena 277 (June 2018): 90–99. http://dx.doi.org/10.4028/www.scientific.net/ssp.277.90.

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This paper justifies the use of the mobile crushing-and-sorting radiometric complexes (MCSRC) under conditions of iron-ore pits in order to increase the ore quality produced in the mine faces of the «ore-rock» contact zone and stabilize the content of the useful component in the general ore-flow. The patterns, which are used as a fundamental base of the radiometric sorting process, are given. The functional scheme of MCSRC is considered, the algorithm of operation is developed, and the main technological tasks of the complex are determined. The technological scheme of the face sloping using MCSRC and formation of the all-pit ore-flow is developed. The expected indicators from use of the mobile crushing-and-sorting radiometric complex in the form of the technological, economical, power-saving and ecological effect were considered.
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33

Zharikov, I. "ABOUT THE CAPACITY OF THE RECEIVING HOPPER OF THE QUARRY CRUSHING PLANT." ASJ 1, no. 49 (June 15, 2021): 49–51. http://dx.doi.org/10.31618/asj.2707-9864.2021.1.49.103.

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The results of the analysis of the application of the methods of the theory of queuing for calculating the capacity of the receiving hopper of an open-pit crushing plant used in combination with a combined automobile-conveyor transport are presented. An analytical expression is given for calculating the capacity of the bunker, taking into account the minimum possible duration of the interval between unloading dump trucks into the bunker. The capacity of the receiving hopper of the crushing plant with a capacity of 4300 t / h was determined when working with dump trucks with a carrying capacity of up to 180 tons.
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34

Levenson, S. Ya, and MA Lantsevich. "Vibratory feeders with elongated conveying surface in rehandling of mined rock in open pit mines." IOP Conference Series: Earth and Environmental Science 523 (July 2, 2020): 012001. http://dx.doi.org/10.1088/1755-1315/523/1/012001.

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35

Özfirat, Pinar Mizrak, Muharrem Kemal Özfirat, and Tahir Malli. "Selection of coal transportation mode from the open pit mine to the thermic power plant using Fuzzy Analytic Hierarchy Process." Transport 33, no. 2 (April 12, 2017): 502–9. http://dx.doi.org/10.3846/16484142.2017.1295278.

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Coal produced in open pit mines should be moved to thermic power plants for production of power. Thermic power plants require very large amounts of coal. In transportation process of this coal, both costs and technical parameters should be considered. Common alternative transportation modes in this process are belt conveyors, truck types, suspension rail conveying systems, pipelines and railways. Selection of one of these modes is influenced by transportation distance, inclination of the haulage road, amount of coal reserve, investment costs, production capacity and unit production cost of the open pit mine. In this study, advantages and disadvantages of alternative transportation modes are analysed using Fuzzy Analytic Hierarchy Process (F-AHP). The results revealed, belt conveyors and trucks transportation by are superior to others.
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36

Collins, Tracy, and Linda Lynch. "Prehistoric burial and ritual, in southwest Ireland." Antiquity 75, no. 289 (September 2001): 493–94. http://dx.doi.org/10.1017/s0003598x00088608.

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Archaeological monitoring of the construction of the N21 road improvements, Co. Kerry, Ireland, in 1999 uncovered four sub-circular features in the townland of Rockfield (FIGURE 1).The central feature revealed itself to be small pit containing a cremation burial. The bones in this shallow pit had been subjected to intense heat, though the boulder clay beneath was unburnt. Radiocarbon (calibrated σ2) dating showed that this cremation dated from 1440–1140 BC, the date being firmly placed in the Irish Bronze Age. The total weight of the cremation was 29 g. The general size of the bone fragments recovered was very small with 72.4% being less than 5 mm in size. This severely limited the osteological analysis. At least some of the fragments, particularly some of the long bone pieces appeared to be human. On the basis of size, the cremation represents at least one adult. The uniform chalky white appearance of the bones recovered indicated that the individual was very well cremated and was probably processed by crushing or pounding of the bones after cremation.
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37

Chirkin, Aleksei A., and Valerii D. Kantemirov. "Rationale for mobile crushing plants design methodology." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal 7, no. 7 (November 11, 2020): 33–40. http://dx.doi.org/10.21440/0536-1028-2020-7-33-40.

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Introduction. Modern mining enterprises in Russia and abroad use opencast mining on a wide scale making the best use of the cyclic-flow technology with mobile crushing plants (PDPU) of various designs. Research aim is to substantiate the methodology of designing mobile crushing plants. Methodology. The work of designers and constructors in choosing the type of PDPU layout scheme and elements of its design, as well as in improving the installation as a whole, is difficult due to the lack of a unified methodological approach to the design of mobile crushing plants in a modular (block) design. Multiple layout solutions in mobile crushing plants design required the formulation of general principles for such plants. PDPU structures were analyzed in the article, and the optimal layout of the plant in a modular design was substantiated as a part of the open-pit transport scheme. Results. The research, including the research carried out in IM UB RAS, made it possible to develop initial requirements for such plants design. In accordance with the requirements the designers of the Uralmash Machine-Building Corporation developed the technical design of the PDPU-2000 mobile unit with a capacity of 2000 m3/ h, consisting of three modules based on the cone crusher KKD 1500/180. Conclusions. Two and three-module plants equipped with large-sized jaw and cone crushers are promising modular PDPU designs currently being developed. The transfer of installation modules to a new location is carried out using a multi-purpose tracked conveyor with a lifting capacity of up to 1000 tons. Recently, there has been an increased interest in this type of PDPU, as evidenced by the large number of patented technical solutions.
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38

Patyk, Michał, Przemysław Bodziony, and Zbigniew Krysa. "A Multiple Criteria Decision Making Method to Weight the Sustainability Criteria of Equipment Selection for Surface Mining." Energies 14, no. 11 (May 25, 2021): 3066. http://dx.doi.org/10.3390/en14113066.

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Selection and assessment of mining equipment used in open pit rock mines relies chiefly on estimates of overall exploitation cost. The rational arrangement of mining equipment and systems comprising loading machines, haul trucks and crushing plants should be preceded by a thorough analysis of technical and economic aspects, such as investment outlays and the costs of further exploitation, which largely determine the costs of mining operations and the deposit value. Additionally, the operational parameters of the mining equipment ought to be considered. In this study, a universal set of evaluation criteria has been developed, and an evaluation method has been applied for the selection of surface mining equipment and the processing system to be operated in specific mining conditions, defined by the user. The objective of this study is to develop and apply the new methodology of multi-criteria selection of open pit rock mining equipment based on multiple criteria decision-making (MCDM) procedures, to enable the optimization of loading, handling and crushing processes. The methodology, underpinned by the principles of MCDM, provides the dedicated ranking procedures, including the ELECTRE III. The applied methodology allows the alternative options (variants) to be ranked accordingly. Ultimately, a more universal methodology is developed, applicable in other surface mines where geological and mining conditions are similar. It may prove particularly useful in selection and performance assessment of mining equipment and process line configurations in mining of low-quality rock deposits. Therefore, we undertook to develop universal criteria and applications for the selection and performance assessment of process machines for surface mines, taking into account environmental aspects as well as deposit quality.
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39

Nanda, Suryajyoti, and B. K. Pal. "Analysis of Blast Fragmentation Using WipFrag." International Journal of Innovative Science and Research Technology 5, no. 6 (July 21, 2020): 1561–66. http://dx.doi.org/10.38124/ijisrt20jun1086.

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Fragmentation is the process of breaking of solid in-situ rock mass into several smaller pieces which are being excavated or moved by material handling equipment. It is the major concern of any blasting operation. Information on the degree and size distribution of fragments within a blasted rock mass is essential for efficient loading, transport, crushing and milling operations. An automated image based granulometry system WipFrag is used to analyze the digital image of rock photographs to determine grain size distribution. The method was tested in Dongri Buzurg open-pit manganese mine of Maharashtra (India). WipFrag software was found to be useful for fragmentation analysis of blast fragment sizes in very short interval of time
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40

Rogizny, Valery, Danila Kulikov, Maria Karpukhina, Alexey Cheremisin, and Vasily Khromov. "Investment appeal assessment of Pt-rich and Cu-Ni deposits of Monchegorsky ore district in current conditions." Ores and metals, no. 1 (May 21, 2021): 42–56. http://dx.doi.org/10.47765/0869-5997-2021-10003.

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Development potential and investment attractiveness of PGM deposits (Monchegorsky ore district) are discussed. By the late 2020, the reserves of these deposits were approved based on results of a feasibility study review assessment in the State Reserve Commission and TsNIGRI approval. In current mineral market conditions (including high Pd price), the most attractive development projects are Vuruchuaivench deposit comprising 4 areas (Plast 300, Vuruchuaivench, Yuzhnosopchinsky and Arvarench), NittisKumuzhya-Travyanaya occurrence and Loipishnyun area. In terms of reserves, ore grades and proximity to processing plants, these potential mining projects are less expensive if developed concurrently. The paper presents recommendations for PGM deposit opening, development and mining using advanced mining equipment in open-pit and underground mining operations, ore conveying and processing plant tailings disposal to infill underground workings. Economic estimates were made supporting development viability of the above deposits within Monchegorsky ore district.
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41

Basargin, Andrei, Valery Salnikov, and Viktor Pisarev. "DEVELOPMENT OF DESIGN METHODS FOR DRILLING AND BLASTING OPERATIONS IN OPEN MINE WORKINGS USING GGIS MICROMINE." Interexpo GEO-Siberia 1, no. 1 (2019): 249–58. http://dx.doi.org/10.33764/2618-981x-2019-1-1-249-258.

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One of the effective ways of collecting information about the properties of the exploding ar-ray is the use of information obtained in the process of drilling wells. This approach is attractive be-cause it does not violate the existing technology of conducting work in a quarry and does not re-quire additional costs for conducting geological studies related to the determination of the physical and strength characteristics of the component rocks of the block. GGIS Micromine will allow automating the design of drilling and blasting operations while ensuring the well placement, taking into account geometry of the block, properties of rocks, and ra-tional distribution of well charges for the most effective crushing of the rock mass. Under the condi-tions of high intensity mining at the open pit mines of the Micromine GGIS, the design decisions are quick and multifaceted when performing drilling and blasting operations.
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42

Jiang, Peng, Shaole Yu, Wei Luan, Xinxi Chen, Yang Qin, and Zhongfu Li. "The Key Construction Technology Research on the Intercontinental Shanghai Wonderland." Advances in Civil Engineering 2020 (October 10, 2020): 1–16. http://dx.doi.org/10.1155/2020/8890282.

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The Intercontinental Shanghai Wonderland is the first natural ecological hotel built in an abandoned mine in the world, which faces many difficulties in the construction process. To solve the difficult problems in the construction process, the study was carried out from the stability analysis of the deep pit cliff, the mechanical performance of the structure, and the construction technology. The Intercontinental Shanghai Wonderland is built around the abandoned deep pit cliffs, and the stability of the deep pit cliffs directly affects the safety of the building. The dynamic response characteristics and the instability characteristics of the mine slope under the dynamic response were analyzed by a three-dimensional dynamic finite element method. The calculation results showed that with effective anchoring support measures, the stability coefficient of slope under static load and small earthquakes was large, which had a certain safety margin. Under the action of large earthquakes, the slope could still meet the stability requirements. The structure of the Intercontinental Shanghai Wonderland is a unique two-point support structure system. It shows the deformation and stress characteristics of one fixed end and one simply supported end under horizontal load. The elastic-plastic time history response of structures under actions of rare earthquakes was analyzed through the finite element analysis software. The analysis results show that the current structural system along with the design of component size and strength can meet the seismic performance of the structure under actions of rare earthquakes. The Intercontinental Shanghai Wonderland was built in a stone pit 88 m below the surface. Therefore, the transportation of materials was a difficulty in the construction process. A set of ultradeep concrete downward conveying equipment was invented to solve the difficulty. The construction process of the whole structure was simulated by finite element software, which provided a safety guarantee for the construction of the whole structure.
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43

KOZLOV, Sergiy, Oleg TERENTIEV, and Mykola SERGIENKO. "INCREASING THE EFFICIENCY OF BLASTING WORKS IN THE QUARRY OF BUILDING MATERIALS." Geoengineering, no. 5 (May 17, 2021): 7–13. http://dx.doi.org/10.20535/2707-2096.5.2021.230625.

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The article is devoted to the urgent problem of increasing the efficiency of blasting operations in open pits in conditions of high water saturation of minerals. The idea of solving this problem is to use the effect of draining the local area of the water-saturated block of the mineral due to the ordinal explosion of the well charge. The purpose of this study was to improve the efficiency of blasting operations on flooded fractured rocks in open pit mining. Research methodology. The proposed technique makes it possible to determine the parameters of drainage of the watered mass during the explosion of borehole charges and the parameters of an ordinal explosion. This makes it possible to improve the quality of rock crushing and reduce the consumption of explosives per unit cost. The main direction of research in this work is to reduce the energy intensity of the process of destruction of a water-saturated mineral by using the internal potential of water in the cracks of the massif destroyed by the explosion. The regularities and the role of the drainage funnel in the efficiency of destruction have been established. The novelty and originality of the work is a developed technology for removing water from the explosion zone, which increases the efficiency of explosion and destruction of rocks using special water-resistant explosives. The practical value of the work lies in the effectiveness of the proposed method for carrying out blasting operations, which, along with improving the quality of crushing, provides an increase in the output of blasted rock mass from one running meter of the well and reduces the cost of expensive water-resistant explosives. Conclusions. The introduction of research results and recommendations in open pits made it possible to increase the efficiency of blasting operations in the development of water-saturated rocks. Energy consumption for the destruction of an array of water-saturated minerals is reduced by 10%. The amount of blasted rock mass per running meter of the well increased by 14.1%, and the specific consumption of explosives decreased by (12-14) %. Keywords: quarry, minerals, well, filtration, water-saturated massif, crushing, explosive, detonation.
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44

Luan, Zhen Hui, Wei Peng Gao, and Chao Wang. "Structure Design of Hand-Held Excavator." Applied Mechanics and Materials 405-408 (September 2013): 3239–42. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.3239.

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At present the hole digging pile is excavated in artificial by digging the hole .This method usually works in low efficiency, high labor intensity of workers and poor security situations. So through the analysis of the artificial excavating pile 's requirement, there is necessary to create a new structural of a machine with the help of pneumatic conveying system to dump soil. In this paper the authors introduce a hand-held excavator which has the above structure in excavating. This machine adopted a motor as a power device, used secondary gear reducer to achieve speed-down, and drill bit was driven by the transmission shaft to complete the excavation. The machine has the digging ability of 240mm excavation pit diameter, simple structure design. It can meet one man operation requirements, and can be carried easily.
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45

Balan, George, Iosif Andras, Nicolae Ilias, and Sorin Mihai Radu. "New Methods of Mining Technological System’s Performance Analysis." Applied Mechanics and Materials 789-790 (September 2015): 1317–22. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.1317.

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The mining production systems, both for underground and open pit extraction consist mainly in a string of equipment starting with the winning equipment (shearer loader, in case of underground longwall mining or bucket wheel excavator in case of open pit mining), hauling equipment (armored face conveyor in longwall mining or the on-board belt conveyor in case of excavators), main conveying equipment (belt conveyor in both cases), transfer devices, stock pile or bunker feeding equipment. This system of mainly serially connected elements is characterized by the throughput (overall amount of bulk coal respectively overburden rock produced), which is dependent on the functioning state of each involved equipment, and is strongly affected also by the process inherent variability due to the randomness of the involved processes (e.g. the cutting properties of the rock). In order to model and simulate such production systems, some probabilistic methods are applied arising from the artificial intelligence approach, involving unit operations and equipment, as the overall system as a whole, namely the Monte Carlo simulation, neural networks, fuzzy systems, and the Load Strength Interference methods. The results obtained are convergent and offer the opportunity for further developments of their application in the study of mining production systems.
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46

Afanasev, Pavel, Andrey Pasynkov, and Ivan Kurta. "Optimal parameters for drilling explosions when developing coal deposits by open-pit method." E3S Web of Conferences 164 (2020): 01012. http://dx.doi.org/10.1051/e3sconf/202016401012.

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The article discusses two deposits of coal mining by the open method. The «Zarechnyi» open-pit is located in Kuzbass, and the «Vostochno-Beiskyi» open-pit is in Khakassia. The main parameters of drilling and blasting operations are given, the geological structure of the deposits is described. The methods of calculating the specific charge, the diameter of the wells and the grid of wells are considered. Blasting operations are an integral part of the mining process. The cost of finished products and the quality of raw materials supplied to the crushing and screening complexes depend on the results of blasting of the rock mass. The currently used retractable blasting technologies, produced according to standard designs, lead to large energy losses during the explosion, as well as to the output of the oversized fraction, which in turn leads to downtime, reduced productivity and breakdown of transport and loading equipment. The paper substantiates the parameters of drilling and blasting operations taking into account the physical processes occurring in the explosive cavity and during the stress wave propagation in the rock mass. Parameters of detonation products are estimated on the basis of shock-wave compression, the refraction of a detonation wave into a rock based on the theory of the breakdown of an arbitrary discontinuity, the stress wave propagation taking into account polymorphic transformations and dissipation energy. Recommendations for reducing the specific charge of explosives, for choosing the diameter of the borehole charge and the grid of wells are proposed.
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47

Ercins, Serdar, and Cem Şensöğüt. "Performance Analysis of the Explosion Applications Realized with Electronic Ignition System at Different Times in the Same Field." International Journal of Economic and Environmental Geology 11, no. 1 (July 6, 2020): 17–23. http://dx.doi.org/10.46660/ijeeg.vol11.iss1.2020.406.

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In the modern world, the mining and construction sectors are developing rapidly and the need for engineering structures and substructures is increasing day by day. The quarries have been brought to an important place in the world within the scope of mining activities while the products needed by these structures are obtained especially from the quarries. Quarries are generally operated by forming benches according to the open pit mining method. In this production method, considering the state of geological structures in the field, the rocks (limestone, basalt, etc.) loosened by drilling and blasting applications are subjected to size reduction, loading and transportation processes. Therefore, the main objective of the present study is to compare the performance of blasting applications of electronic ignition system together with developing a model that can analyze the performance of ignition systems. In the evaluation of blasting performance, issues such as bulk particle size distribution, crushing and grinding processes, environmental effects, increase in production amount after blasting and cost of blasting were taken into consideration
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48

Ercins, Serdar, and Cem Şensöğüt. "Performance Analysis of the Explosion Applications Realized with Electronic Ignition System at Different Times in the Same Field." International Journal of Economic and Environmental Geology 11, no. 1 (July 6, 2020): 17–23. http://dx.doi.org/10.46660/ojs.v11i1.406.

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In the modern world, the mining and construction sectors are developing rapidly and the need for engineering structures and substructures is increasing day by day. The quarries have been brought to an important place in the world within the scope of mining activities while the products needed by these structures are obtained especially from the quarries. Quarries are generally operated by forming benches according to the open pit mining method. In this production method, considering the state of geological structures in the field, the rocks (limestone, basalt, etc.) loosened by drilling and blasting applications are subjected to size reduction, loading and transportation processes. Therefore, the main objective of the present study is to compare the performance of blasting applications of electronic ignition system together with developing a model that can analyze the performance of ignition systems. In the evaluation of blasting performance, issues such as bulk particle size distribution, crushing and grinding processes, environmental effects, increase in production amount after blasting and cost of blasting were taken into consideration
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49

Nan, Senlin, Weiming Guan, Tao Hu, Weisheng Shi, Junhui Zhang, Hui Chen, Junyu Cong, and Huabin Liu. "The Influence Mechanism of the Master Weak Interlayer on Bench Blasting Effect and Its Evaluation Method." Shock and Vibration 2021 (July 12, 2021): 1–18. http://dx.doi.org/10.1155/2021/7814954.

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The weak interlayers in an open-pit blasting bench affect the uniform distribution of explosive energy. To explore the mechanistic influence of a weak interlayer on the effect of blasting, 9 sets of numerical blasting experiments were constructed using the orthogonal experiment method. The degree of bench crushing after blasting, the maximum velocity of the rock mass at 0.05 s, and the displacement of the back of the bench were thus investigated. The analysis revealed that the impact of the thickness of the weak interlayer, its wave impedance, and its location of occurrence on the bench blasting indicated an ordered decreasing effect. Based on this, the evaluation method for the master weak interlayer and the design plan of the specific charge structure were proposed. The evaluated design proposals were verified through both numerical and field tests. The research results will provide a scientific basis to determine a reasonable charge structure of the bench blasting of rock masses containing weak interlayers.
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50

Kawalec, Witold, Robert Król, and Natalia Suchorab. "Regenerative Belt Conveyor versus Haul Truck-Based Transport: Polish Open-Pit Mines Facing Sustainable Development Challenges." Sustainability 12, no. 21 (November 5, 2020): 9215. http://dx.doi.org/10.3390/su12219215.

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The mining industry is facing sustainable development challenges, among which the energy efficiency issues seem to be of major importance. As transport of the mined ore is considered as one of the most energy intensive operations, the improvement of its energy efficiency is a key indicator in terms of sustainable actions taken by mining companies. In open-pit mines, the material handling operations are mostly performed with trucks. Their electrified version—truck trolley systems—surpass diesel trucks’ efficiency while comparing the increased production capacity and the reduction of maintenance cost and fuel consumption. The paper analyzes the opportunities and benefits of the replacement of an ore transport system based on hauling trucks with a regenerative belt conveying in an open-pit mine. Presented case study has been analyzed from energy consumption and environmental impact reduction perspectives. Generally, conception of a regenerative conveyor is based on recuperation of energy or continuous braking needed while a conveyor is running downhill. Energy generated during the braking process (converted from the potential gravitational energy of the conveyed material) is fed back to the electrical grid. Then the regenerative conveyor can be considered as a machine that mines energy as an additional by-product of an exploited deposit. It was shown that difference in transportation cost between haul trucks and energy efficient regenerative conveyors is around 95%. The paper points the conditioning elements to allow the implementation of a regenerative belt conveyor system.
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