特殊“S”型覆岩结构冲击地压危险区划分  

Risk area division of rock burst hazard in special "S"-shaped overlying multi-strata spatial structure

作　　者：陈学华[1] 徐鑫[1] 吕鹏飞[1] 

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2017年第5期456-460,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然基金煤炭联合基金重点项目(U1361211)

摘　　要：为避免济宁二号煤矿23上03工作面回采期间造成冲击地压事故,保证其安全回采.分别采用覆岩空间结构理论分析和FLAC3D数值模拟的方法探讨了23_上03工作面在不同阶段的应力分布及演变规律,并划分了冲击地压发生的危险区域.得出当23_上02和23_下07都采空后,23_上03工作面在推进至23_上02工作面切眼前后30m附近时,沿空顺槽靠近采空区一侧易造成冲击地压事故.In order to avoid rock bumps accidents, and ensure the mining safety, two methods were used to study the stress distribution and evolution law of working face 23up03 in different mining process, which includes analysis by overlying multi-strata spatial structure theory and FLAC3D numerical simulation. In addition, the hazard area of rock burst was divided. This paper obtained the conclusion that after 23up02 and 23down07 were mined, when 23up03 working face was pushed to the ~ont and back of the 30m near the 23up02 open-off cut, the rock burst disaster may occurs along the mining face roadway side near goaf.

关 键 词：覆岩空间结构 冲击地压 数值模拟:多层采空区 危险区划分 

分 类 号：TD324[矿业工程—矿井建设]