针对老洼地煤矿110102运输巷巷道变形较为严重的问题,运用钻孔窥视确定围岩松动圈,运用应力解除法测量原始应力,结合FLAC3D软件分析巷道应力情况及应力演化规律,在原支护方案上进行改进。结果表明:巷道优化后其顶板下沉量减小了40%,底鼓量减小了50%,左帮收缩量减小了60%,右帮收缩量减小了33.3%;优化后其顶板应力减小了25%,底板应力减小了26.3%,左帮应力减小了66.7%,右帮应力减小了57.1%;实现了安全高效回采。

In response to the serious deformation problem of the 110102 transportation roadway in Laowadi Coal Mine, drilling peeping is used to determine the loose circle of the surrounding rock, stress relief method is used to measure the original stress, the stress situation and stress evolution law of the roadway are analyzed combined with the FLACsoftware. Improvements are made to the original support scheme. The results show that after optimizing the roadway, its roof subsidence amount decreases by 40%, the floor heave amount decreases by 50%, the left side shrinkage amount decreases by 60%, and the right side shrinkage amount decreases by 33.3%; After optimization, its roof stress decreases by 25%, the floor stress decreases by 26.3%, the left side stress decreases by 66.7%, and the right side stress decreases by 57.1%; Safe and efficient stoping is achieved.