瞬变电磁法在掘进工作面超前探测中的应用

Application of Transient Electromagnetic Methods in Excavation Working Face Advanced Detection

介绍了瞬变电磁超前探测技术的原理与方法,以贵州省晴隆县永荣煤矿为例,探测14101回风巷前方积水及总回风巷老空积水情况,探测掘进头顺层及顶板的低阻体异常及分布范围。探测结果表明,通过对采集到的数据进行处理,绘制视电阻率等值线断面图,结合地质资料可以准确判定地质异常区域的位置和富水性强弱。

This paper presents the principle of mine transient electromagnetic method. Taking Qinglong County of Guizhou province Yongrong coal mine as an example, it detected the ponding in front of 14101 wind alley and total return air roadway gob, and the low resistance body abnormality and distribution of bedding and roof. The survey results show that, by processing the collected data and drawing the contours of apparent resistivity section, combined with geological information, it can accurately determine the geological anomality area and watery strength.