可控源音频大地电磁测深法在地热勘探中的应用  

The Application of CSAMT to the Geothermal Exploration

作　　者：柳建新[1,2] 麻昌英 孙丽影 曹创华[2] 

机构地区：[1]中南大学有色金属成矿预测教育部重点实验室,湖南长沙410083 [2]中南大学地球科学与信息物理学院,湖南长沙410083 [3]浙江省工程物探勘察院,浙江杭州310005

出　　处：《工程地球物理学报》2014年第3期319-325,共7页Chinese Journal of Engineering Geophysics

基　　金：国家自然科学基金项目(41174102);国家自然科学基金项目(41174103);有色资源与地质灾害探查湖南省重点实验项目(2010TP4012-6)联合资助

摘　　要：地热作为一种新型的可再生绿色清洁能源,越来越受到广泛的重视。介绍了可控源音频大地电磁测深法(CSAMT)的工作原理,其因采用人工场源的方法而具有抗干扰能力强、分辨率较高等特点,相对于利用天然场源的方法更适合于受干扰的区域工作。本文以该方法在湖南某地地热勘探中的应用为例,研究可控源音频大地电磁测深法在地热勘探中的应用效果。介绍了测区基本的地球物理及地质构造背景,采用GDP-32Ⅱ型多功能电法探测系统进行数据采集,对数据的可靠性进行了分析,分别对四条测线结果做了解释和推断,分析地下水有利聚集空间及圈定有利储热部位,效果显著,为进一步开发利用地热资源提供帮助。As a renewable and clean energy,geothermal is more and more widely appreciated.In this paper,the working principle of controlled source audiomagnetotellurics（CSAMT）is described.Because CSAMT uses artificial field source with features of antiinterference ability and higher resolution,it is more suitable for the work in disturbed areas than natural field source.This paper takes the application of this method to geothermal exploration in Hunan as an example,and its application effect in geothermal exploration is researched.Basic setting of geophysical and geological structure in survey area is introduced.GDP-32Ⅱmultifunction electrical detection system is used for data collection,and then thereliability of the data is analyzed.The four lines results are explained and interpreted respectively.The favorable accumulation spatial of groundwater is analyzed and the favorable thermal storage site is delineated,which has significant effects.That will be helpful for the further development and utilization of geothermal resources.

关 键 词：CSAMT 地热 地下水勘探 

分 类 号：P631.3[天文地球—地质矿产勘探]