高水平应力条件下大断面巷道支护技术研究

针对长平煤矿高水平应力条件下大断面沿底留顶巷道难以支护的现状,通过地应力测试、钻孔窥视、数值模拟等方法进行了巷道顶板围岩破坏分析。根据分析的结论,提出43042巷道沿顶布置支护方案,并通过设置测站实测表面位移、顶板离层、测力锚杆等方法对其稳定性进行了分析,验证了43042巷道支护方案的合理性。

Large Section Roadway Supporting Technology in High Horizontal Stress

For Changping mine,under high horizontal stress large cross section along the bottom roadway is difficult to support the status quo, through stress testing, drilling peep, numerical simulation methods such as roadway roof rock failure analysis. According to the analysis of the conclusions, put forward 43042 roadway along the top layout support programs, and by setting the station measured surface displacement, roof separation, rock-bolt dynamometer and other methods,its stability were analyzed to verify the 43042 roadway programs reasonable.