广域电磁法在金属矿勘探中的应用研究和探讨  

Discussion and research on the application of the wide field electromagnetic method to the exploration of metal ore deposits

作　　者：蒋永芳 李芳书 曹渊[3] 夏灵云 张婷 JIANG Yong-Fang;LI Fang-Shu;CAO Yuan;XIA Ling-Yun;ZHANG Ting(Hunan Geosun Hi-technology Co.,Ltd.,Changsha 410208,China;Hunan Deep Earth Resources Electromagnetic Exploration Engineering Technology Research Center Changsha 410208,China;The Second Geological Exploration Institute of Henan Geological Mineral Resources Exploration and Develop-ment Bureau,Zhengzhou 451464,China)

机构地区：[1]湖南继善高科技有限公司,湖南长沙410208 [2]湖南省深地资源电磁法勘探工程技术研究中心,湖南长沙410208 [3]河南省地质矿产勘查开发局第二地质勘查院,河南郑州451464

出　　处：《物探与化探》2020年第5期1073-1077,共5页Geophysical and Geochemical Exploration

基　　金：河南省自然资源科研项目(2019-373-2)。

摘　　要：在金属矿产资源勘查工作中,随着探测深度的不断增大,矿区人文干扰因素严重,物探勘查难度加大,费用增加,因此在深部找矿及危机矿山资源大调查工作中,须大力发展新方法、新技术、新仪器设备。本文介绍广域电磁法的基本原理、工作方法、应用原则和条件等,并以河南某金矿做具体案列,进行分析和研究,阐述广域电磁法在金属矿深部勘查中的有效性。In the exploration of metal mineral resources,physical exploration is usually difficult but of low cost.Along with the increasing depth of the exploration and serious influence of human disturbance factors in the mining area,the difficulties and cost of physical exploration have been increasing.What’s more,due to the limitations of the technical conditions such as the precision and power of the instruments and equipment,the geological effectiveness is getting worse and worse by adopting the general geophysical prospecting method.However,the wide field electromagnetic method has such advantages as great detective depth,high speed,low cost,high resolution and precision,and strong anti-interference capability,and hence can be effectively applied to metal mineral exploration,and this has been proved many times.Therefore,it is advisable to develop new methods,new technologies and new instruments represented by the wide field electromagnetic method in the investigation of deep orebodies as well as crisis mine resources.This paper introduces the basic principles,working methods,application principles and conditions of wide field electromagnetic method,analyzes and studies the case of a gold mine in Henan Province,and expounds the effectiveness of the wide field electromagnetic method in deep exploration of metal deposits.

关 键 词：广域电磁法 广域视电阻率 构造破碎带 电性异常 

分 类 号：P631.4[天文地球—地质矿产勘探]