Results 1 to 10 of about 659 (172)
Energies, 2023 China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost.
Dongdong Chen +9 more
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Sudden change mechanism of mine pressure in fully mechanized caving face and its countermeasures
Meikuang Anquan, 2022 In view of the sudden change of mine pressure in 226 upper 02 fully mechanized caving face of Huangyuchuan Coal Mine, the mechanism and countermeasures of sudden change of mine pressure in fully mechanized caving face are studied by using the methods of
LI Yong, WANG Zhuoying
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Strata behavior and control strategy of backfilling collaborate with caving fully-mechanized mining [PDF]
Open Geosciences, 2020 Abstract This article analyzes the technical difficulties in full-section backfill mining and briefly introduces the technical principle and advantages of backfilling combined with caving fully mechanized mining (BCCFM). To reveal the strata behavior law of the BCCFM workface, this work establishes a three-dimensional numerical model and
Sun Wenjie
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Gong-kuang zidonghua, 2023 The current research achievements in the construction of intelligent fully mechanized caving face lack systematic implementation case for a specific fully mechanized caving face.
WU Xicang +3 more
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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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Meikuang Anquan, 2020 This paper systematically summarizes the development process of fully mechanized top coal caving technology and equipment in Yankuang Group in recent 30 years.
MENG Xiangjun, LI Mingzhong, YUE Ning, SUN Jishuang
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Energies, 2022 Because of the problem of gangue discharge and surface subsidence during coal mining, the current research on underground filling mainly focuses on the paste filling, solid filling, and grouting filling of the overburden separation layer after ...
Liang Li +7 more
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International Journal of Mining Science and Technology, 2018 When mining the fully-mechanized longwall caving face along strike, the unstable equipment, the low top-coal recovery ratio and the difficulty in controlling surrounding rock may occur due to large dip angle.
Hu Shaoxuan +3 more
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Development of 3D top coal caving angle model for fully mechanized extra-thick coal seam mining
International Journal of Mining Science and Technology, 2022 During high-intensity, fully mechanized mining of extra-thick coal seam, the top coal would cave to a certain 3D form. Based on the data collected during drilling, a 3D model of top coal caving surface space was established to determine the relationship ...
Hongfei Duan +4 more
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Research of ground cracks caused by fully-mechanized sublevel caving mining based on field survey
Procedia Earth and Planetary Science, 2009 AbstractFully-mechanized sublevel caving mining have been widely used due to its efficiency, however, the accompanied breakage such as ground cracks caused by which is much bigger than traditional mining methods. The study of ground cracks caused by fully-mechanized sublevel caving mining can give supports to the prevention or repairation of them ...
Wu Kan
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