矿井瞬变电磁法探测异常体空间定位技术研究

Research on Technology of Abnormal Bodies Spatial Location by Method of Transient Electromagnetic Method in Mine Shaft

矿井瞬变电磁法的全空间效应给异常体的空间定位带来一定的困难。通过物理模拟实验,研究了低阻异常体位于距离工作面底板不同垂直距离时的瞬变电磁响应特征。实验结果表明:向工作面底板进行多角度探测时,改变低阻异常体与工作面底板之间的距离,对比分析其响应特征,可实现异常体的空间定位。

Full spatial effect of mine transient electromagnetic method brings some difficulties to locate abnormal bodies. Through physical simulation experiments, the article studied the transient electromagnetic response characteristics of low resistivity abnormal bodies when they located at different vertical distances from the floor of working face. The experimental results show that： while carrying out multi-angle detection, by changing the distance between the low resistivity abnormal body and the floor of working face,the spatial loca- tion of the abnormal body can be determined through analyzing their response characteristics.