断层对25110综放工作面发生冲击地压的影响分析  

Analysis on Influence of Faults upon Rock Burst in 25110 Fully Mechanized Caving Face

作　　者：夏永军[1,2] 

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,重庆400037

出　　处：《矿业安全与环保》2014年第3期118-120,共3页Mining Safety & Environmental Protection

摘　　要：跃进煤矿F16断层的存在直接影响到25110综放工作面周围岩体应力分布状态及应力集中方式,使煤岩体的构造应力尤其是水平应力增加,易于形成应力集中。通过对工作面顶板岩性结构特征、煤层冲击倾向性以及回采工作面顶板应力分布情况的理论分析及数值模拟研究,表明在F16断层的影响下,煤层受到构造应力、回采工程扰动以及老顶巨厚岩层断裂震动的作用,极易发生冲击地压。The existence of F16 fault in Yuejin Coal Mine directly affects the stress distribution state and stress concentrationmode of the rock mass around 25110 fully mechanized caving face, which will cause the increase of the tectonic stress of rockmass, especially the increase of horizontal stress, and easily form stress concentration. The theoretical analysis and numericalsimulation study on the structural characteristics of roof rock, the potential burst of coal seams and the roof stress distribution inthe working face showed that the rock burst easily occurred due to the influence of F16 fault and under the action of tectonic stress,the mining disturbance and the rupture of the extra-thick main roof.

关 键 词：冲击地压 综放工作面 断层 应力 

分 类 号：TD823.97[矿业工程—煤矿开采]