摘要
针对东掌煤业E305工作面回风辅助巷过采空区时巷道围岩破碎,巷道支护困难的现状,采用现场调研的方法对工作面围岩地质情况进行调研和分析,提出了"锚网索+高冒区注浆+U型支架"联合支护技术,并在现场进行了工业性试验。矿压监测效果表明,E305工作面回风辅助巷围岩在20d后围岩变形开始趋于稳定,巷道围岩变形量小,保证E305工作面回风辅助巷过采空区支护安全。
In view of the situation that the surrounding rock of the roadway is broken and the roadway support is difficult, the method of on-site investigation is used to investigate and analyze the geological conditions of the surrounding rock of the working face. The joint support technology of"anchor cable + high-risk grouting + U-bracket"was carried out, and industrial tests were carried out on site. The effect of mine pressure monitoring indicates that the surrounding rock deformation of the E305 working face returning rock is stable after 20 days, and the deformation of the surrounding rock of the roadway is small, which ensures the safety of the E305 working face returning auxiliary road through the goaf.
作者
汪大鹏
WANG Dapeng(Shanxi Changzhi Yangtouling Dongzhang Coal Industry Co., Ltd. , Changzhi 047100 , China)
出处
《煤矿现代化》
2019年第4期1-3,共3页
Coal Mine Modernization
关键词
回风辅助巷
采空区
联合支护
围岩控制
return air auxiliary lane
goaf
joint support
surrounding rock control
