摘要
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 roofs of the 3--1 coal seam composed of sand--mud layer are easily softening in water in Bojianghaizi Mine of a western company of Huainan Mining Industry Group. By the seepage influence of groundwater, the roadway support tends to fail, which may cause serious hidden troubles in mine safe production. The paper used transient electromagnetic method to detect the water situation of roadway surronding rock in assistance conveyance stone door on ＋803.5m level and analyzed the electrical characteristics of the surrounding rock section. The dynamic testing results of electrical characteristics show that the resistiv- ity of the roadway surrounding rock appears to increase gradually, and the conditions of the roadway are greatly improved because of the continuous dehydration. Meanwhile, this de- tection method can also provide reference for the similar problems.
出处
《工程地球物理学报》
2013年第1期21-23,共3页
Chinese Journal of Engineering Geophysics
关键词
巷道围岩
瞬变电磁法
视电阻率
roadway surrounding rock
transient electromagnetic method
apparent resis-tivity
