深部煤矿巷道失稳机理及围岩控制技术分析

Analysis of roadway instability mechanism and surrounding rock control technology in deep coal mine

深部巷道围岩变形破坏相对于浅部围岩表现出较大的不同。以斜沟煤矿皮带下山出现的巷道失稳情况为研究对象,分析了巷道所处位置地应力较大、巷道支护设计不够合理、地下水影响是导致其出现严重变形破坏的主要原因,并从深部巷道支护的特点出发,提出了锚网索喷+U钢+柔性垫板支护对策,取得了较好返修支护效果。

The deformation and failure of surrounding rock of deep roadway is quite different from that of shallow surrounding rock.In this paper,the instability of roadway in the belt downhill of Xiegou Mine was studied.It was concluded that the main cause of the serious deformation and damage was the serious stress of the roadway and groundwater.The support measures of ＋U steel ＋ flexible backing plate based on characteristics of the support achieved better repair effect.