下部近浅埋煤层复采覆岩运移规律  

Repeated Mining Overburden Strata Movement Laws in Lower Nearly Shallow Buried Coal Seam

作　　者：杨宝贵[1] 李杨[1] 李永亮[1] 李思乾 杨鹏飞[1] 党鹏[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国煤炭科工集团重庆研究院,重庆400037

出　　处：《煤矿安全》2013年第9期44-46,共3页Safety in Coal Mines

摘　　要：综合采用数值模拟和理论分析的方法,着重研究上湾煤矿下部煤层开采过程中上覆岩层的运移规律。研究表明,上煤层已采情况下,下部煤层开采时单一关键层破断后形成的砌体梁结构较为稳定,并且下部煤层上覆岩层没有出现台阶下沉状况,地表下沉也较为缓慢,其动载现象与浅埋煤层相比不明显。Using numerical simulation and theoretical analysis method, the paper teuses on the movement laws ol overburden stra｜a m the mining process of lower seam. The research shows that when the upper mining coal seam has been mined, the masonry beam struc- ture formed after the rupturing of the single key layer is relatively stable in the mining process of lower coal seam, and the lower seam overhurden does not appear lhe condition of stage sinking, and ground depression is relatively slow, and the dynamic upload phenome- non is not obvious compared with the shallow coal seam.

关 键 词：近浅埋煤层 厚基岩 数值模拟 覆岩运移 

分 类 号：TD325[矿业工程—矿井建设]