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
doaj +4 more sources
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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Deformation Mechanism of the Coal ahead of Fully Mechanized Caving Face under High-Intensity Mining Condition [PDF]
Advances in Civil Engineering, 2021 In order to study the coal deformation and failure mechanism in fully mechanized caving face under the high-intensity mining, based on the equivalent mechanical model of transversely isotropic cylindrical coal with fractures, the equivalent equations for
Can Zhao +6 more
semanticscholar +3 more sources
Study on Roof-Coal Caving Characteristics with Complicated Structure by Fully Mechanized Caving Mining [PDF]
Shock and Vibration, 2019 With mining technology and mechanization degree being improving, fully mechanized caving mining technology (FCM) has become a main method for thick coal seam extraction in China.
Yunpei Liang +6 more
semanticscholar +3 more sources
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
doaj +2 more sources
Cutting-Caving Ratio Optimization of Fully Mechanized Caving Mining with Large Mining Height of Extremely Thick Coal Seam [PDF]
Advances in Civil Engineering, 2019 Serious rib spalling and low recovery rate problems caused by the poor top-coal caving property (TCCP) were investigated in fully mechanized caving mining with large mining height (FMCMLMH) of extremely thick coal seam.
Kai Wang +3 more
semanticscholar +4 more sources
Research and application of key technology of intelligent coal caving in high gas fully-mechanized top coal caving face [PDF]
Meitan kexue jishu, 2023 At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design ...
Yao CUI +3 more
doaj +3 more sources
Energy Exploration & Exploitation, 2022 In view of solving the problems of large top coal loss and low recovery rate in the traditional caving process of horizontal section fully mechanized caving mining, taking the fully mechanized caving face of steeply inclined and extra-thick coal seam in ...
Fengfeng Wu +7 more
semanticscholar +3 more sources
A multifactor coupling prediction model for the failure depth of floor rocks in fully mechanized caving mining: a numerical and in situ study. [PDF]
R Soc Open Sci, 2019 To study the mining-induced failure depth of floor rocks in a fully mechanized mining caving field affected by different coal seam pitches, mining face lengths, burial depths and aquifer water pressures, multifactor-coupled orthogonal numerical tests on ...
Jiang Y, Cai T, Zhang X.
europepmc +2 more sources
Mechanical Analysis of Mining Stress Transfer on Isolated Island Face in Extra-Thick Fully Mechanized Top-Coal Caving Mining [PDF]
Geofluids, 2020 The mining spatial structure of isolated island face in extra-thick fully mechanized top-coal caving mining is unique, which leads to a complex mining stress distribution and serious safety hazards.
M. Tu, Qingwei Bu, B. Fu, Yu Wang
semanticscholar +3 more sources