瞬变电磁法在长平煤矿构造探测中的应用

Application of Mine Transient Electromagnetic Method in Structure Detecting of Changping Coal Mine

为探查长平煤矿巷道掘进中的隐伏构造,防止突水事件,基于矿井瞬变电磁法全空间"烟圈效应"理论,根据现场巷道地质情况,优化井下巷道顶底板的探测方向和角度,设计了超前探测方案,初步判断巷道前方存在隐伏含水构造异常区,通过对异常区进行超前钻探验证,确定掘进巷道前方存在陷落柱。实践表明,探查结果与巷道实际揭露情况基本吻合,肯定了瞬变电磁法在矿井含水构造探查应用中的有效性和实用性。

To probe the buried structure in the roadway driving in Changping Coal Mine,and prevent water inrush event,based on the whole space ＂ smoke ring effect＂ theory of mine transient electromagnetic method,according to the site geological conditions of roadway,the probing direction and angle of the roof and floor of the underground roadway were optimized,advanced detection programs was also designed. It was initially determined that there is buried abnormal water-bearing body in front of the roadway,anomalies were verified by advanced boreholes,it was determined that there exists collapse column in front of the driving roadway. The practical application shows that,exploration results is consistent with the site exposing conditions of roadway. The effectiveness and practicality of transient electromagnetic method is affirmed in exploring buried structure of coal mine.