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.
出处
《煤矿安全》
CAS
北大核心
2013年第9期44-46,共3页
Safety in Coal Mines
关键词
近浅埋煤层
厚基岩
数值模拟
覆岩运移
nearly shallow coal seam
thick bed roek
numerical simulation
overburden strata movement
