矿井瞬变电磁法在巷道迎头超前探测中的应用  

Application of Mine Transient Electromagnetic Method to Advanced Detecting of Roadway Head

作　　者：王东伟[1] 刘志新[1] 武俊文[1] 许云磊[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《工程地球物理学报》2011年第4期403-407,共5页Chinese Journal of Engineering Geophysics

基　　金：国家重大基础研究发展计划(973)项目(编号:2007CB209400)资助

摘　　要：介绍了矿井瞬变电磁法超前探测在井下运用的基本原理、技术和方法。在数据采集过程中,通过调整天线的法线与巷道底板的夹角,探测巷道顶板、顺层和巷道底板方向上介质的电性变化情况。对采集到的数据进行畸变处理、深度校正后,绘制视电阻率等值线断面图。探测结果表明,该方法能准确圈定巷道迎头前方的地质异常并反映出异常体的空间特征,对解决巷道掘进迎头前方的地质异常是一种快捷、有效的勘查手段,可以为煤矿水害的预报和防治提供重要的技术依据。This paper introduces the advanced detecting of mine transient electromagnetic method used in the mine. In the process of data acquisition, the variation of electric properties of medium in the roadway roof, the bedding and the roadway floor were detected by adjusting the angle between the normal direction of the antenna and the roadway floor. Thei soline sections of apparent resistivity have been drawn after the collected data were processed in the distortion way and corrected in depth. The detection results show that the method can be used to locate the geological anomalies and find out the space characteristics of the anomalies. Therefore, it can be considered as a quick, effective exploration method to solve the geological anomalies in the direction of the head- on roadway excavation, which is important to predict and prevent coal mine flood.

关 键 词：矿井瞬变电磁 巷道迎头 深度校正 地质异常 

分 类 号：P631.3[天文地球—地质矿产勘探]