浅埋深薄软基岩工作面覆岩运动规律研究  

Study on overlying strata movement law of shallowly buried working face with thin soft bedrock

作　　者：吕伟伟[1] 李福胜[1] 成辰欣[1] 张保[1] 李骐[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京市海淀区100083

出　　处：《中国煤炭》2013年第8期52-55,共4页China Coal

基　　金：国家重点基础研究计划(973)西部煤炭高强度开采下地质灾害防治与环境保护基础研究(2013CB227900)

摘　　要：通过对位于东胜煤田中南部的李家壕煤矿2-2中煤层11208工作面进行UDEC数值模拟分析及现场矿压观测,研究了浅埋深薄软基岩工作面覆岩运动破断一般规律,得出了浅埋深薄软基岩工作面的来压规律,并指出工作面上覆基岩发生短砌体梁滑落失稳,来压步距较短,工作面受冲击载荷作用,周期来压强烈。Based on UDEC numerical simulation and in-situ strata control observation in 11208 working face in 2--2 middle seam in Lijiahao Mine located in central-southern Dongsheng Coalfield, the paper studies the overlying strata movement fracture law of shallowly buried work- ing face with thin soft bedrock and obtains the strata behavior rule of it. And it points out that there is short voussoir beam sliding instability in overlying bedrock of working face, and the weighting interval is shorter, and the periodic weighting in working face is strong under the influ- ence of impact load.

关 键 词：浅埋深工作面 薄软基岩 数值模拟 运动规律 

分 类 号：TD325[矿业工程—矿井建设]