高频大地电磁法在云南某铜矿区坑道中的试验

摘要

High frequency electromagnetic method (EH4)is an effective method to find low resistivity copper mine, which has been widely used in surface exploration work.It has achieved remarkable results.But the tunnel EH4 copper ore prospecting work has not been reported.To understand the effectiveness of tunnel EH4 method,we choose a cut-off electromagnetic interference state of a copper mine in Yunnan area to watch EH4 tunnel.The data processing,including anomaly delineation,inference and interpretation of results,the low resistivity anomalies is known in copper orebody.EH4 tunnel test in the method is effective and worthy of popularization and application.%高频大地电磁法是寻找低阻铜矿的有效方法，已广泛应用于地表勘查工作，并取得了明显的效果。但是坑道 EH4铜矿找矿工作尚未见到报道。为了解坑道 EH4方法的有效性，选择了一个停产无电磁干扰状态的云南某铜矿区进行了坑道 EH4试验研究，经数据处理，异常圈定，推断解释，结果在已知铜矿体获得了明显的低视电阻率异常，试验证明坑道 EH4方法有效，值得推广应用。