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.