义马跃进矿断层构造下冲击地压监测及防治  

Monitoring and Prevention of Rock Burst under Fault Structure in Yima Yuejin Coal Mine

作　　者：李斌[1] 王进强[1] 王莎莎[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《矿业安全与环保》2012年第6期43-46,50,共5页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51174016)

摘　　要：断层构造诱发冲击地压的机理为构造应力与采动应力叠加。以义马跃进矿25110工作面下巷为研究对象,通过对地质构造和断层情况的研究,运用综合指数法进行冲击危险程度评价和等级划分,并采用KJ550冲击地压在线监测系统实时监测受断层影响区域的应力集中情况,结合相应的卸压和支护措施,形成一套监测预警与防治结合的系统。该系统安装后有效地监控了25110工作面推进到断层影响区域时出现的因断层活化而引起的应力集中和转移现象,通过采取大直径卸压钻孔、煤层注水等方法并配合强支护措施,实现了应力的释放和转移,降低了断层附近工作面冲击危险性,提高了生产的安全性。The mechanism that the fault structures induce rock bursts is the superposition of the tectonic stress and mining pressure.In this paper,the authors took the lower roadway of 25110 working face of Yima Yuejin Coal Mine as the study object and made a study of the geological structures and faults.They carried out the hazard degree evaluation and grade classification of rock bursts by using the comprehensive index method and conducted real-time monitoring of the stress concentration areas which were affected by the faults with KJ550 on-line rock-burst monitoring system,and finally they formed a complete system for monitoring,pre-warning and prevention of rock bursts in combination with the appropriate pressure relief and support measures.The stress concentration and transfer phenomena caused by the fault activation were effectively monitored by this system after 25110 working face was advanced to the fault-affected zone.On the basis of the adoption of large diameter pressure relief hole,water infusion in coal seam and powerful support measures,the stress release and transfer were achieved,the rock burst hazard near the face was reduced and the safety of mine production was improved.

关 键 词：冲击地压 断层活化 应力集中 监测预警 

分 类 号：TD324[矿业工程—矿井建设]