地—井TEM在危机矿山深部找矿中的应用实例

TYPICAL CASES OF APPLYING BOREHOLE TEM TO DEEP PROSPECTING IN CRISIS MINES

为了示范地—井瞬变电磁法在深部找矿应用中的效果,进一步在国内推广,选择在安徽黄山岭、湖北铜绿山矿区开展地—井TEM测量试验,结果在黄山岭未见矿钻孔中探测发现了一处井旁盲矿异常并正确地探测出了铜绿山1200多米深部已见矿体的延伸方向。试验结果表明,地—井TEM法具有探测深部盲矿和追踪矿体延伸方向的良好效果,值得在我国的深部找矿工程中广泛地推广应用。

The application and study of the downhole transient electromagnetic method remain very insufficient in China.In order to demonstrate the effectiveness of this method and further promote its application under the situation of increasing exploration depth,the authors chose the Huangshanling ore district in Anhui Province and the Tonglushan ore district in Hubei Province as the study areas.As a result,a good anomaly related to blind ore body beside the well was found in Huangshanling,and the extension of the ore body at the depth of 18200 m was detected in Tonglushan.The two instances demonstrate that this method can detect blind ore bodies and trace the extension of the ore body.Therefore,this method is worthy of promption for deep exploration in China.