基于瞬变电磁法的煤矿采空区地质勘察研究

Study on geological survey of coal mine goaf based on transient electromagnetic method

近年来我国经济快速发展,各种矿石资源需求逐渐增大,大量矿石的开采,形成大量的采空区。采空区造成生态环境的破坏、地面出现裂缝和塌陷,给生活和生产带来严重的安全隐患。采用瞬变电磁法对煤矿采空区地质勘察进行了研究。分析了瞬变电磁法工作原理和瞬变电磁设备主要功能和参数,然后,以某研究区为例,采用Grapher软件对原始数据进行了处理,采用Surfer软件对电阻率进行定量和定性分析,根据中心回线和重叠回线电阻率断面上的异常区域,对采空区的位置和充水断层的位置进行了推测。

In recent years,China′s economy has developed rapidly, and the demand for various ore resources has gradually increased.The mining of a large number of ore has resulted in a large number of goaf.The goaf causes damage to the ecological environment,cracks and collapses on the ground,and poses serious safety hazards to life and production.The transient electromagnetic method was used to study the geological survey of coal mine goaf.The working principle of transient electromagnetic method and the main functions and parameters of transient electromagnetic equipment were analyzed.Then ,taking a research area as an example,the raw data was processed by Grapher software,and the resistivity was quantitatively and qualitatively analyzed by Surfer software.The anomalous area on the center loop and the overlap loop resistivity section was estimated for the position of the goaf and the location of the water-filled fault.