极近距离煤层巷道掘进过断层顶板控制技术

为研究极近距离采空区下巷道掘进过断层控制技术,以磁窑沟煤矿11102回风巷道为工程背景,采用理论分析计算和数值模拟等研究方法对极近距离过断层巷道失稳机理和控制技术展开研究。研究结果表明:巷道围岩应力受断层构造应力改变是巷道失稳主要原因,补强支护后的控制方案比原控制方案控制效果提升,巷道稳定性较高。

Roof Control Technology of Roadway Driving Through Fault in Very Close Seam

In order to study the control technology of roadway driving through fault under the extremely close goaf,taking the 11102 return air roadway of Ciyaogou Coal Mine as the engineering background,the instability mechanism and control technology of the extremely close through fault roadway are studied by theoretical analysis and numerical simulation.The results show that the main reason for the instability of the roadway is that the stress of the surrounding rock is changed by the structural stress of the fault.Compared with the original control scheme,the control effect of the reinforced support scheme is improved,and the stability of the roadway is higher.