深井沿空工作面冲击地压的微震监测与数值模拟  

Micro-seismic Monitoring and Numerical Simulation for Rock Burst at Mining Face Along Gob in Deep Shaft

作　　者：温经林[1] 姜福兴[1] 魏全德[1] 曲效成 尹永明[3] 舒凑先 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中关村科技园区海淀园企业博士后科研工作站北京安科兴业科技有限公司工作分站,北京100083 [3]中国安全生产科学研究院矿山安全技术研究所,北京100012

出　　处：《煤矿安全》2016年第8期194-197,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB226803);国家自然科学基金资助项目(51174016;51274022)

摘　　要：以某深井沿空工作面开采为背景,采用微震监测技术进行现场监测,并借助FLAC3D进行数值分析,研究在采动应力场不断变化过程中采场围岩破裂微震事件的时空演化规律,揭示沿空工作面采动影响范围及冲击危险区域,得到以下结论:沿空工作面沿空一侧覆岩破裂高度最大,约为两采空区短边之和的一半;沿空一侧工作面超前影响范围约为非沿空一侧的2倍;沿空一侧应力集中程度高,存在发生冲击地压的危险。Taking mining face along gob in deep shaft as background,micro-seismic monitoring and FLAC3 Dnumerical simulation were introduced to study mining influence scope and the rock burst risk areas of the mining face along gob.The space-time evolution laws of micro-seismic events were studied for the rock rupture of rock mass during the changing process of the mining stress field,and the following conclusions were obtained.The height of rock mass fracture reaches its maximum at the gob side of the mining face along gob,which is approximately half of the sum of the two short gob sides; the mining influence scope along gob side is two times higher than another side of the mining face; the pressure along gob side is in a high stress state,there is the risk of rock burst.

关 键 词：深井 沿空工作面 冲击地压 微地震监测 数值模拟 

分 类 号：TD324[矿业工程—矿井建设]