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rock Mechanics Bulletin 2023年第2期2卷 32-40页

作者： Jie Chen Kaiwen Shi Yuanyuan Pu Derek B.Apel Chuanjiu Zhang Yujun Zuo Jiongkun Chen Le Xu Zhen Gui Longfei Song School of Resources and Safety Engineering Chongqing UniversityChongqing400044China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing400044China School of mining and Petroleum Engineering University of AlbertaEdmontonAlbertaT6G 2R3Canada Guoneng Shendong Coal Group Co. LtdChina mining College Guizhou UniversityGuiyang550025China

The fault is potentially vulnerability's geological structure in the working face and its vicinity,and it is also a crucial geological factor affecting coal mine safety *** investigate the unstable failure of surrounding rock induced by fault activation under the influence of adoption,which was studied utilizing field case and numerical analysis for the deformation and failure process of surrounding rock near the fault-affected *** with field cases,this paper analyzes disturbance stress and roof abscission layer monitoring in effecting zones of fault *** the discrete element 3DEC numerical analysis method,the model of surrounding rock unstable fracture induced by fault activation under adoption is *** unstable fracture and stress variation characteristics of surrounding rock induced by fault activation during the excavation of the upper side wall and lower side wall of the faults are simulated and *** analysis shows that as the coal working face continues to advance,the mining stress gradually *** is a zigzag wave on the relationship curve between coal mining and roof displacement near the fault,which reveals that the surrounding rock of the fault activation affected zone is in the superposition state of static load and dynamic ***,the simulation results show that the stress and displacement of surrounding rock near the fault increase with the advance of coal mining *** closer to the fault plane,the displacement gradually returns to zero,and the stress is also in a lower state.

关键词： surrounding rock mining Fault activation Instability fracture Simulation analysis

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