瞬变电磁技术在煤层底板岩溶水探测中的应用

新安煤田各矿井受奥灰水威胁严重,曾发生过多次突水事故。瞬变电磁技术在底板岩溶水探测中得到了广泛应用,收到了较好的效果,文章分析总结了瞬变电磁在新安煤田各矿井应用的新特点:重度异常区是钻探验证的首选区域,可根据重度异常区的治理效果再对中轻度异常区进行处理;向斜区域是富水有利区段,异常区验证率较高;在判断突水水源时,利用瞬变电磁探测结果可实现对水源的快速、准确的识别。

The practice of transient electromagnetic probing seam floor karst water

The Xin'an coalfield mines were threated seriously by the Ordovician limestone water and have occurred many water inrush accidents. Transient electromagnetic technology had been widely applied in bottom karst water detection, and received good results, this paper summarizes the new analysis features of transient electromagnetic applications in recent years: The severe abnormalities was the preferred area of drilling verification, then process mildly abnormal area by the governance effect of severe abnormalities; Syncline area is favorable water-rich section and have higher verification rate; To judge water inrush source, using transient electromagnetic detection results can achieve rapid and accurate identification.