摘要
针对潞安集团余吾煤业S2106工作面沿空护巷煤柱,其注浆前后的效果对巷道围岩稳定性的影响,采用相似模拟原理和方法,对注浆前后的煤柱进行相似模拟研究。通过对煤柱的整体形态及巷道围岩稳定性等特征对比分析,实验表明,注浆加固后的煤柱对巷道围岩变形控制效果明显,能够满足工作面回采要求。
In view of the effect of the grouting effect on the stability of roadway surrounding rock in the S2106 working face of the Yuwu coal mining group before and after grouting along the coal pillar of the hollow retaining roadway,the similarity simulation of coal pillar before and after grouting was carried out by using similarity simulation principle and method.Through the comparison and analysis the overall shape of coal pillar and the stability of roadway surrounding rock and other characteristics before and after grouting reinforcement,the coal pillar strengthened by grouting has obvious effect on controlling the deformation of roadway surrounding rock and can meet the requirement of working face mining.
作者
孙淼
孙泽东
SUN Miao;SUN Ze-dong(Yuwu Coal Mine,Lu′an Group,Changzhi046103,China;Institute of Mining Technology,Taiyuan University ofTechnology,Taiyuan030024,China;Baidong Coal Mine,Datong Group,Datong037029,China)
出处
《煤炭技术》
CAS
2019年第8期24-26,共3页
Coal Technology
关键词
相似模拟
沿空护巷煤柱
注浆加固
围岩变形
analog simulation
pillar along hollow guard lane
grouting reinforcement
deformation of surrounding rock
