Results 1 to 10 of about 649 (133)
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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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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Advances in Civil EngineeringThe variation in top-coal thickness within thick coal seams leads to differences in the movement characteristics of the mining-induced roof. This study focused on the fully mechanized caving face of the 4-2 coal seam in Shendong Buertai Mine to explore ...
Fa Dong +4 more
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International Journal of Mining Science and Technology, 2015 Aimed at determining the appropriate caving–mining ratio for fully mechanized mining of 20 m thick coal seam, this research investigated the effects of caving–mining ratio on the flow fields of coal and waste rocks, amount of cyclically caved coal and ...
Ningbo Zhang, Changyou Liu, Mengsong Pei
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Numerical and in-situ investigation on the ground behavior of the end roof in fully mechanized caving face [PDF]
E3S Web of Conferences, 2021 Fully mechanized top coal caving is a major high-yield and high-efficiency coal mining method for thick seam mining. At present, it is affected by the further popularization and application of fully mechanized caving mining because the recovery rate is ...
Zang Chuanwei +5 more
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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, 2021 Aiming at the problem of over-limit gas in the return air corner of the “U” type downward ventilation fully mechanized caving face in Baode Coal Mine, the law of gas migration in the stope and goaf was studied. Using Fluent numerical simulation software
ZHANG Zenghui, XUE Yanping
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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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