摘要
以受两次回采动压影响的53082巷为工程背景,通过建立数值计算模型,对巷道掘进阶段、一次回采留巷期、二次回采期间的围岩应力及变形情况进行模拟研究。基于此提出采用深浅孔注浆+注浆锚索联合控制巷道围岩变形技术,矿压观测结果表明,二次回采期间顶板、底板及两帮变形量分别为150mm、350mm、260mm,有效控制了巷道围岩变形,实现了工作面安全高效回采。
Based on the engineering background of 53082 roadway affected by the dynamic pressure of two times, a numerical model is established to simulate the stress and deformation of the surrounding rock in the excavation stage, the first stoping period and the second mining.Based on this, the technique of combining deep hole grouting with grouting anchor cable to control surrounding rock deformation of roadway is proposed. The results of mine pressure observation show that the deformation of roof, bottom plate and two sections are 150 mm, 350 mm and260 mm respectively during the second mining period, which effectively controls the deformation of surrounding rock in the roadway, and realizes the safe and efficient mining.
作者
蔺康杰
LIN Kangjie(Hongtong Yilong Coal Industry Co., Ltd., Huozhou Coal Electricity Group , Shanxi Hongtong 041600)
出处
《煤矿现代化》
2019年第4期63-65,68,共4页
Coal Mine Modernization
关键词
回采动压
数值计算
深浅孔注浆
注浆锚索
Mining dynamic pressure
numerical calculation
deep and shallow hole grouting
grouting anchor Cable
