CSAMT法在煤矿隐伏断层探测中的应用

隐伏断层在我国煤矿大量存在,对煤矿的施工设计带来了很大的困难,威胁着煤矿生产安全。本文介绍了可控源音频大地电磁测深法的工作原理,并对隐伏断层的电性特征进行了正演计算。通过在山西某煤矿的实地探测分析可知,隐伏正断层的异常表现一般为横向电阻率等值线发生错断、并伴有同向扭曲现象,有比较明显的密集梯度带。此探测方法是煤矿隐伏断层探测的又一种新的手段和方法。探测结果证明利用此种方法进行煤矿隐伏断层超前预测是可靠的。

Application of CSAMT Method in Buried Fault Detecting in Coal Mine

large numbers of the buried faults are exist in the coal mines in China, which very great difficulty to the construction＇s design of coal mine and to the safety of coal mine＇s production. This text introduces the work principle of the method of controlled source audio-frequency magnetotellurics （CSAMT）, analies the effect of this method in detecting buried fault in coal mine, And the means of field exploration in a coal mine in Shanxi solves the problems in design and production of coal mines and, proves that the advance forecast of such method in detecting buried fault in coal mine is reliable. The anomaly of buried fault shows that transversal resistively isopleths occurrence miscount break, combine with distortion phenomenon, and have denseness gradient belt obviously.