Applied Sciences, 2022 To study the caving of thick hard overburdens and evolution of water-conducting fracture zones in fully mechanized top-coal caving faces of gently inclined extra-thick coal seams, we comprehensively analyzed the 8103 working face of the Beixinyao Coal ...
Yang Zhou, Xueyi Yu
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Evaluation of coal longwall caving characteristics using an innovative UDEC Trigon approach [PDF]
, 2016 Author version of article. The version of record is available from the publisher via DOI: 1016/j.compgeo.2013.09.020Copyright © 2013 Elsevier Ltd. All rights reserved.The paper presents an innovative numerical approach to simulate progressive caving of ...
Coggan, John, Gao, Fuqiang, Stead, Doug
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Mechanism of stress-loaded rockburst in fully mechanized top-coal caving stope with deep overburden
Meitan xuebao, 2023 The stress-loaded rockburst is a unique type of rockburst that occurs in some fully mechanized top-coal caving stopes with deep thick overburden, its occurrence mechanism is still unclear, leading to the failure to effective prevention and even serious ...
Xiang ZHANG +10 more
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Применение бесконсольных крепей механизированных комплексов при отработке пологих пластов [PDF]
, 2016 Purpose. Substantiation of applying additional load-bearing structure of powered support near the face onto the bench formed within the seam by the cutter-loader actuating element, which allows to increase efficiency of coal winning.
Busylo, V, Savelieva, T, Serdyuk, V
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PROCJENA RIZIKA KOD ŠIROKOČELNOGA PRIDOBIVANJA UGLJENA USLIJED SLOMA RADNOG ČELA [PDF]
, 2022 Face failure is a typical phenomenon in longwall coal mines that can have a wide range of consequences. Face failure, which includes wall spall and roof collapse occurrences, is a hazardous virus that, if not managed, spreads fast across all stages of ...
Arasteh, Hossein +2 more
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Comprehensive Control Method of Gas in Upper Corner of High Strength Fully Mechanized Coal Mine [PDF]
E3S Web of Conferences, 2021 Based on the problem of large gas emission and serious gas accumulation in upper corner of the intensive fully mechanized caving face, taking the fully mechanized caving face of Wangjialing Coal Mine in Hedong Mine as the research object, the main gas ...
Duan Huijun, Hao Shijun, Peng Xu
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Overall requirements for an advanced underground coal extraction system [PDF]
, 1980 Underground mining systems suitable for coal seams expoitable in the year 2000 are examined with particular relevance to the resources of Central Appalachia. Requirements for such systems may be summarized as follows: (1) production cost; (2)miner safety;
Goldsmith, M., Lavin, M. L.
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Technology Diffusion in the Coal Mining Industry of the USSR: An Interim Assessment [PDF]
, 1989 Over many years IIASA has been involved in energy studies, coal was always an important research topic at all levels from resource assessment, study of potential future coal supply to the analysis of environmental impacts resulting from expanded coal ...
Astakhov, A., Grubler, A., Mookhin, A.
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Study on sub-regional control of fully mechanized top-coal caving roadway under close irregular goa
Meikuang Anquan, 2023 In order to solve the control problems of large deformation of roadway surrounding rock in close coal seams, taking the fully mechanized top-coal caving roadway in close thick coal seams under irregular goaf of Xiaoyu Coal Mine as the engineering ...
LIU Huabo +3 more
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Study on Multisize Effect of Mining Influence of Advance Speed in Steeply Inclined Extrathick Coal Seam [PDF]
, 2022 Aiming at the multisize effect of mining in steeply inclined extrathick coal seam, taking the fully mechanized top-coal caving mining in B3+6 coal seam +425 level in the south of Wudong coal mine as the background, this paper studies the mining stress ...
Chong Jia +6 more
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