Application of Transient Electromagnetic in Detection of Water Accumulation in Broad Coal Mine

Gao Chong

doi:10.47191/etj/v6i8.01

Abstract

In view of the problem of serious water accumulation and frequent accidents in the coal mine mining area, the distribution range of Yuzhou Shenhuo Kuanfa Mining Coal (hereinafter referred to as Kuanfa Coal Mine) is detected by transient electromagnetic method. The transient electromagnetic emission wire frame is 480m × 480m, frequency is 8Hz, power supply current is 16A. The research conclusion preliminarily determines that the transient electromagnetic and controllable source audio earth electromagnetic method is applicable for the exploration of the mined space area in Yuzhou mining area, and the construction parameters provide a reliable reference for the accurate exploration of the mined space area in Kuanmining area.

Highlights

With the integration of coal resources, because most of the small coal kilns are unplanned mining, and the remaining unmining areas are unknown, leading to the existence of many hidden mining areas[1], among which the old kiln water becomes a major potential danger in the nearby area and adjacent coal seam[2][3]
Transient electromagnetic method can effectively help detect the distribution of water in the mined out area[4][5], which is of great significance and help to the treatment and later coal mining
It is a geophysical exploration method that uses the underground field through step waveform electromagnetic pulse excitation by ungrounded return circuit and measures the change of the underground medium to find various geological targets[7][ 8 ]

Summary

INTRODUCTION

With the integration of coal resources, because most of the small coal kilns are unplanned mining, and the remaining unmining areas are unknown, leading to the existence of many hidden mining areas[1], among which the old kiln water becomes a major potential danger in the nearby area and adjacent coal seam[2][3]. Transient electromagnetic method can effectively help detect the distribution of water in the mined out area[4][5], which is of great significance and help to the treatment and later coal mining. Resistivity differences of different locations, different depths and different rock layers, and identifies the nature, buried depth and conductivity of abnormal sources combined with geology and other data.

OVERVIEW OF THE STUDY AREA

WORKING METHOD

CONCLUSION