综采工作面断层区域冲击机制及控制对策研究  

Research on Rock Burst Mechanism and Control Measures in Fault Zone of Fully Mechanized Working Face

作　　者：易恩兵[1,2] 曹建军[1,2] 张永将[1,2] YI Enbing;CAO Jianj un;ZHANG Yongjiang(State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing 400037, China;China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400037, China)

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司瓦斯研究分院,重庆400037

出　　处：《矿业安全与环保》2016年第6期84-87,91,共5页Mining Safety & Environmental Protection

基　　金：中煤科工集团重庆研究院有限公司青年创新基金项目(2014QNJJ22)

摘　　要：针对深井综采工作面断层区域冲击灾害频发的现状，研究了断层区域力学作用机制，提出动静载叠加诱发冲击的原理。数值分析了综采工作面断层区域动静载叠加对巷道的冲击破坏效应，结果表明：工作面断层区域的高静载与矿震产生的高动载叠加，促使煤岩体所受应力超过其强度极限而发生失稳破坏；断层区域顶板断裂幅频中的主频成分主要分布在0?40Hz。分析制订了冲击危险的控制对策。To counter the situation of frequent occurrence of rock burst disasters in the fault zone, the mechanical actionmechanism in the fault zone was studied and the theor^^ of bursts induced by the superposition of the dynamic and static load wasput forward. Numerical analysis was carried out on the effect of the superposition of dynamic and static load on the impactdestruction of the roadway in the fault zone of the fully mechanized coal face. The results demonstrated that the superposition ofthe high static load in the fault zone and the high dynamic load induced by the mine shock bump promoted the destabilizationand destruction of the coal-rock mass due to the stress surpassing its ultimate strength; the dominant frequency in the amplitudefrequency of roof rupture in the fault zone was mainly distributed between 0 and 40 Hz. Finally, the control measures for theburst hazard were analyzed and formulated so as to ensure the safe coal mining in the fault zone of the working face.

关 键 词：诱冲机制 断层活化 冲击地压 动静载 控制对策 

分 类 号：TD324[矿业工程—矿井建设]