老窑采空区探测中瞬变电磁法的应用

文章以新疆肖尔布拉克煤矿的勘探结果为例,简单阐述了利用大定回线源瞬变电磁法在老窑采空区探测中的应用效果。为了更全面地观察测区地层的电性分布情况,绘制了各测线的视电阻率断面图,垂直测线方向的视电阻率断面图和同一标高的平面等值线异常图,并对比已知的地质勘探结果和钻孔测井资料进行分析。从分析结果可看出,未积水或积水较少的采空区表现为水平长条状的中高阻异常带,甚至更明显的长条形等值线畸变。

The application of the transient electromagnetic method in the detection of coal gob area

The application effect of large fixed transient electromagnetic method in the detection of coal gob area was simply expounded by taking the example of the exploration result in Xinjiang Xiaoerbulake coal mine.In order to observe the electric property distribution of the survey area more comprehensively,the apparent resistivity sections of each line and perpendicular direction,and the anomaly contour maps were also drawn to analyze by the comparison of the geological exploration results and the borehole logging data.The analysis results showed that the gob area without a small amount of water presented as high resistivity anomaly belt of horizontal strips,or even more obvious contour distortion of strip shape.