复杂断层带富水性矿井瞬变电磁法探测研究

复杂断层带富水性的探测关系到矿井的采掘安全。探讨了矿井瞬变电磁法超前探测的基本原理与技术方法,分析了断层带富水性的地球物理响应特征,结合某矿巷道掘进前方断层带出水位置的矿井瞬变电磁法探测,提出了立体探测方案,对探测结果进行了分析解释,得到钻探验证。研究表明,利用矿井瞬变电磁探测技术可以有效地获得掘进巷道前方复杂断层带的富水程度、位置和范围,可以为掘进巷道防治水工作提供可靠的技术保障。

Detection of Water Enrichment in Complex Faults by Mine Transient Electromagnetic Method

The detection of water enrichment in complex fault zones matters in mining and drilling safety. This paper studied the basic principles and techniques of advanced detection by mine transient electromagnetic method (MTEM), analyzed the geophysics responding characteristics of water enrichment in complex faults. Combined with a case study on detection of the water-inrush location between complex faults ahead of drilling roadway using MTEM in a coal mine, this paper provided the projects of 3D detection, interpreted the detecting results of apparent resistivity, and finally the results were proved by borehole drilling. The research results indicated that it is very effective and convenient to obtain the water enrichment extent, location and scope between complex faults ahead of drilling roadway by MTEM. The method can provide reliable technical support for preventing water-inrush in roadway drilling.