Detection Method and Abnormal Characteristics Analysis of Mine Transient Electromagnetic Technique in Coal Mine
LIANG Qinghua
Abstract：Based on the mine transient electromagnetic theory, analysis was made on the working method and application scope of the mine transient electromagnetic detection including the fixed translation method, conversing angle method and comprehensive method. Through the cases, study was carried out on the abnormal characteristics of the mine transient electromagnetic detection such as the fault fracture water, water-filled subsided column, gob water, water flowing fractured zone and so on, the results showed that the mine transient electromagnetic response was more obvious for each water-bearing anomaly and presented different abnormal characteristics. Through the field detection of underground water-bearing structures and the following test of the advance detection in mine roadway, study was made on the accuracy of the mine transient electromagnetic detection. The statistics indicated that the overall success rate of the mine transient electromagnetic detection was about 86. 2%, so it is a more practical geophysical method for mine flooding.
Keywords：mine transient electromagnetic techniquedetection methodabnormal characteristicsaccuracymine flooding
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 72-75 )