Results 31 to 40 of about 1,887 (217)
Meikuang Anquan, 2020 Aiming at the problem of large dust concentration during the mining operation of the 81308 fully mechanized caving face, based on the principles of wet coal dust reduction and spray dust reduction, utilizing “static pressure + a group of porous” large ...
WANG Huifeng, CHEN Dianfu
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Meikuang Anquan, 2022 In order to determine the reasonable length of the mining face for high strength fully mechanized caving mining in low gas seams, taking 42108 fully mechanized caving face of Buertai Mine as the research object, the formula of checking the mining face ...
LYU Qingxu, XIAO Jianru, MAN Yang
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Analysis of operation parameters of partial backfilling in the context of selective coal mining [PDF]
, 2019 Purpose is to determine factors of effect of mechanical parameters and geometry of packs, constructed using the undercut rocks in the process of selective coal mining, on the state of geomechanical system within a mine working-stope junction during a ...
Dereviahina, N, Malanchuk, L, Sotskov, V
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Research on automatic coal caving control system
Gong-kuang zidonghua, 2018 Aiming at problem that fully mechanized caving face at the back end of fully mechanized top coal caving face adopted manual caving control method, its automation level differed greatly from that at the front end of fully mechanized top coal caving face ...
CUI Zhifang, NIU Jianfeng
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Determination on Reasonable Mining Height and Top Coal Caving Technology in Huating Coal Mine
Meikuang Anquan, 2020 In view of the problems, such as coal wall spalling, roof caving and low recovery rate of top coal in 250107-1 fully mechanized caving face of Huating Coal Mine at present, the method of combining FLAC3D numerical analysis and theoretical calculation ...
QIAO Zhongdong, QU Ying, YANG Guohong, LIU Biao
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Meikuang Anquan, 2021 This paper analyzes the sudden abnormal gas outburst and its change during the initial mining period of the 2601 fully mechanized caving face in Zhangcun Coal Mine.
ZHANG Lijun, ZHANG Dongpeng, ZHANG Tianming, LUO Renjun, ZHANG Chao, SONG Yifan, YANG Shengqiang
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Advances in Civil Engineering, 2021 Adopting an effective top coal caving method is the key to enhancing coal recovery and reducing gangue content for the fully mechanized top coal caving working face with extra-thick coal seams.
Shi Jiulin +3 more
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Rib/snook design in mechanised depillaring of rectangular/square pillars [PDF]
, 2016 This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record.A field study at different mechanised depillaring (MD) operations in Indian coalfields (with depth ranging from 60 to 377 m and caveability ...
Coggan, John
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Sustainability, 2023 During the mining process of fully-mechanized caving faces, the roof of the roadway behind the working face easily forms an arched-shape hanging roof structure with the working face pushed forward, which results in potential hazards such as gas accumulation and large-scale roof collapse.
Hongtao Liu +6 more
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Numerical methods of geomechanics tasks solution during coal deposits’ development [PDF]
, 2016 Purpose. Generalization of numerical modeling of geomechanical processes in the vicinity of mine workings by finite elements method and making recommendations for substantiation of suitable construction and behavior of rock massif physical model ...
Bondarenko, V +4 more
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