电磁法在有色金属矿产勘查中的研究进展  

Research progress of electromagnetic method in nonferrous metal mineral exploration

作　　者：柳建新[1,2] 刘嵘 郭荣文[1,2] 童孝忠[1,2] 谢维[1,2] LIU Jian-xin;LIU Rong;GUO Rong-wen;TONG Xiao-zhong;XIE Wei(School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;Key Laboratory of Non-Ferrous Resources and Geological Hazard Detection,Central South University,Changsha 410083,China)

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]中南大学有色资源与地质灾害探查湖南省重点实验室,长沙410083

出　　处：《中国有色金属学报》2023年第1期261-284,共24页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(42130810,42004065,42074165);湖南省重点研发计划资助项目(2020SK2058)。

摘　　要：电磁法勘探以电磁感应原理为基础,主要通过观测到的电磁场响应推断地下电阻率的空间分布特征,在此基础上结合地质解释,从而实现金属矿产勘查的目的。目前,电磁法按照接收信号组成分为频率域与时间域两大类,勘探深度从浅部几米到深部几十公里,应用领域从陆地、高空到海洋均有涉及。本文简要综述了主要电磁勘探方法理论、应用场景及观测系统,从数据解释角度回顾了电磁法正演模拟与反演计算研究工作,介绍了不同种类电磁法在金属矿勘查中的典型应用案例,最后对电磁法勘探金属矿的发展提出了作者的看法和建议。The electromagnetic method based on the principle of electromagnetic induction, is commonly applied to metal ore exploration. The inversion and interpretation of observed data are carried out to construct the spatial distribution of resistivity related to mineralization. At present, the various kinds of electromagnetic methods mainly classified as frequency domain and time domain according to the composition of received signals. The exploration depth ranges from a few meters to tens of kilometers, and the application fields range from land,aviation to ocean. In this review, we briefly introduced the theory, application scenario and observation system of typical electromagnetic exploration methods. Then, we reviewed the research work of forward modeling and inversion from the perspective of data interpretation. Subsequently, we listed the application cases of different kinds of electromagnetic methods in metal ore exploration. Finally, we summarized and pointed out the future development and prospect of electromagnetic method in ore mineral exploration.

关 键 词：电磁法 金属矿产勘查 观测系统 数据解释 应用案例 

分 类 号：P319[天文地球—固体地球物理学]