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淮南矿业集团西部泊江海子煤矿3-1煤层顶板砂-泥岩层遇水易发生泥化,其巷道支护受到地下水渗流的影响,易造成巷道支护的失效,给矿井安全生产带来严重隐患。论文利用矿井瞬变电磁探测技术,对矿井+803.5m水平辅助运输石门掘进巷道的围岩含水情况进行探测,并分析了围岩断面的电性特征。动态测试结果表明,该巷道围岩的电阻率呈逐渐变大趋势,围岩持续失水使得巷道条件得到改善。同时该探测方法也可为类似问题解决提供参考。
The coal seam roof sand-mudstone layer of coal seam 3-1 of the Huai’nan Coal Mine in the west of Huainan Mining Group tends to muddy. When the roadway support is affected by the groundwater seepage, it will easily lead to the failure of the roadway support and bring serious hidden danger to the mine safety production . In this paper, the mine transient electromagnetic detection technology is used to detect the water content of the surrounding rock of auxiliary roadway with the level of 803.5m in the mine, and the electrical characteristics of the section of the surrounding rock are analyzed. The dynamic test results show that the resistivity of the surrounding rock of the roadway shows a tendency of becoming larger and larger, and the continuous loss of surrounding rock makes the roadway condition improved. At the same time, the detection method can also provide reference for solving similar problems.