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| NUMERICAL ANALYSIS ON MOVEMENT AND FAILURE of coal AND stress condition OF SUPPORT structures in MECHANIZED TOP-COAL CAVING IN STEEP THICK SEAM |
| Wang Shuren，Wang Jinan，Dai Yong |
| (Civil and Environmental Engineering School，University of Science and Technology Beijing， Beijing 100083 China) |
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Abstract The rules of coal and rock movement，the characteristics of deformation and failure of coal，and the major principal stress in the process of top-coal caving in steep thick seam are analyzed by using UDEC2D. The characteristics of stress and movement of support structure at top-coal caving face are investigated by using FLAC3D. The simulation results agree with the field conditions.
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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2004, Vol. 23 
