矿井瞬变电磁法和震波单点法巷道勘探研究

Study on the Tunnel Exploration by Transient Electromagnetic Method and Seismic Wave Single Point Method in Mine

为探明构造区并预防水患,在东大煤矿进风巷开展瞬变电磁法和震波单点法联合的超前物探,通过分析两种探测方法的原理特点,设计了巷道超前物探方案,并对探测数据分析。结果表明,大巷前方100 m范围内在掘进头前方15~45 m处存在电阻率较低区域,需要进行探放水和注浆加固,预防水患事故发生。

In order to explore the structural area and prevent flood,the advanced geophysical exploration combined with transient electromagnetic method and seismic wave single point method is carried out in the air inlet roadway of Dongda Coal Mine.By analyzing the principle characteristics of the two detection methods,the advanced geophysical exploration scheme of roadway is designed,and the detection data is analyzed.The results show that there is a low resistivity area within 100 m in front of the main roadway and 15-45 m in front of the heading,so it is necessary to carry out water exploration and drainage and grouting reinforcement to prevent flood accidents.