陕西煤炭2025，Vol.44Issue(9)：21-25,52,6.DOI:10.20120/j.cnki.issn.1671-749x.2025.0904
煤矿回采工作面冲击地压发生机理及控制技术研究
Rock burst mechanism and control technology for coal mine mining face
李志亮1
作者信息
- 1. 山西晋城兴唐煤业有限公司,山西 晋城 048000
- 折叠
摘要
Abstract
In order to study the occurrence mechanism of strata outburst in the process of working face mining,the breakage characteristics of the overburden rock and the occurrence mechanism of strata outburst in the working face were investigated by theoretical analysis,numerical simulation and on-site measurement with the 3#coal working face as the engineering back-ground.Numerical simulation and microseismic monitoring results show that:with the increase of trapezoidal height,the frac-ture morphology changes from vertical"O-X"type to horizontal"O-X"type;from the narrow face to the wide face,the o-verhanging width of key layer is larger than its ultimate breaking width,and the breaking of key layer generates high dynamic load;the initial breaking location of the key layer is close to the 3#coal return air roadway,and the combined high dynamic and static load caused by the fault structure induces the strata outburst;and the synergistic control technology of weakening the dynamic load through the directional hydraulic fracturing of the hard roof,and reinforcing the surrounding rock through the support system is put forward.关键词
冲击地压/工作面/关键层/动静组合负荷Key words
rock burst/working face/key layer/dynamic and static combined loads分类
矿业与冶金引用本文复制引用
李志亮..煤矿回采工作面冲击地压发生机理及控制技术研究[J].陕西煤炭,2025,44(9):21-25,52,6.
