矿井瞬变电磁采煤工作面低阻异常交集法

The low resistivity abnormal intersection method for transient electromagnetic coalface detection of mine

基于瞬变电磁法探测理论,结合井下瞬变电磁探测试验,研究井下瞬变电磁探测采煤工作面巷道的影响以及探测方法,提出矿井瞬变电磁探测采煤工作面"交集法",即在井下实际探测方面,需要在采煤工作面的两条巷道内做工作。在山西吕梁某矿对该方法进行了试验验证,结果表明,采用"交集法"探测结果比较准确,可提高探测精度,减少钻探工作量,是目前矿井瞬变电磁法探测采煤工作面较为可靠的方法,建议在煤矿中推广使用。

Based on the mine transient electromagnetic detection theory in combination with underground transient electromagnetic de-tection test, the authors studied the roadway influence and detection method of coalface detection by using mine transient electromagnet-ic method and put forward the ＂intersection method＂for mine transient electromagnetic coalface detection, i.e., in downhole practical exploration, two adits should be dug for coalface. This method was tested in a coal mine in Luliang of Shanxi Province, and the result shows that the ＂intersection method＂ can make more accurate detection, improve the detection accuracy and reduce the drilling work-load. This is a reliable method for mine transient electromagnetic detection of coalface. It is thus held that the use of this method should be promoted in the coal mine.