综合物探方法在淮安凹陷地区深层地热勘探中的应用  

Application of Comprehensive Geophysical Methods in Deep Geothermal Exploration in Huai’an Depression

作　　者：周荣亮 陈增权 徐睿知 刘彦华 汪名鹏 Zhou Rongliang;Chen Zengquan;Xu Ruizhi;Liu Yanhua;Wang Mingpeng(Jiangsu Province Inestitute of Hydrogeological and Engineering Geoligical Investigation,Huai’an Jiangsu 320800,China)

机构地区：[1]江苏省水文地质工程地质勘察院,江苏淮安320800

出　　处：《工程地球物理学报》2024年第3期425-432,共8页Chinese Journal of Engineering Geophysics

基　　金：江苏省地质矿产勘查局科研项目(编号:2019-KJ-09);湖南省自然科学基金(编号:2023JJ30663)。

摘　　要：近几年各地方都加大了对地热资源开发,针对浅部地热资源的勘察方法不断丰富,但对于深层地热资源的勘探手段相对较少。本文以淮安凹陷地区地热勘探为例,综合了区域地层内其电性与速度差异特征,采用可控源音频大地电磁和微动方法进行探测。然后对两种物探方法剖面数据进行反演解释,确定勘探区域内地质断裂带大致位置,并对异常区内微动单点频散分层解释,更可靠地得出热能储蓄位置。在物探资料的引导下,确定了1处地热钻井布置位置。经钻井验证,成功出水,表明此次选择物探方法是可以解决淮安凹陷区的地热资源勘探问题的;同时为苏北相同地质条件下寻找地热资源提供了有利参考,并为城市能源开发提供了有效、科学、合理、安全、可靠的手段。In recent years,various regions have increased their development in geothermal resources,and exploration methods for shallow geothermal resources have been enriched.However,there are relatively few exploration methods for deep geothermal resources.This paper takes geothermal exploration in the Huai’an depression area as an example,which has geological characteristics such as thick coverage layer,shallow surface water,and deep burial depth of geothermal water resources.Under the above geological conditions,taking into account the differences in electrical properties and velocity within the regional strata,a comprehensive use of controllable source audio magnetotelluric and micro motion methods was adopted.Guided by geophysical data,by inverting and interpreting the profile data of two geophysical methods,identifying the approximate location of geological fault zones in the exploration area,and interpreting the dispersion layer of micro motion single points in the abnormal area to more reliably determine the location of thermal energy storage.the layout of geothermal drilling was determined.After drilling verification,the selection of geophysical exploration methods can solve the problem of geothermal resource exploration in the Huai’an depression area.At the same time,it provides favorable references for searching for geothermal resources under the same geological conditions in northern Jiangsu,and provides effective scientific,reasonable,safe,and reliable means for urban energy development.

关 键 词：地热能勘查 可控源音频大地电磁 微动勘探 淮安凹陷区 综合物探 

分 类 号：P631[天文地球—地质矿产勘探]