CSAMT法在福建省惠安地热勘查中的应用  

Application of CSAMT in Geothermal Exploration in Hui’an, Fujian Province

作　　者：任小庆 余鸿 罗娜宁 李超民[4] 王启宇[5] REN Xiaoqing;YU Hong;LUO Naning;LI Chaomin;WANG Qiyu(SINOPEC Green Energy Geothermal Development Co.,Ltd.,Baoding,Hebei 071800,China;Fujian Fourth Geological Brigade,Ningde,Fujian 352100,China;Shaanxi Coal Geology Investigation Research Institute Co.,Ltd.,Xi'an,Shaanxi 710021,China;104 Geological Team,Guizhou Bureau of Geology and Mineral Exploration and Development,Duyun,Guizhou 558000,China;Center of chengdu,China Geological Survey,Chengdu,Sichuan 610081,China)

机构地区：[1]中石化绿源地热能开发有限公司,河北保定071800 [2]福建省第四地质大队,福建宁德352100 [3]陕西煤田地质勘查研究院有限公司,陕西西安710021 [4]贵州省地矿局104地质大队,贵州都匀558000 [5]中国地质调查局成都地质调查中心,四川成都610081

出　　处：《现代地质》2022年第2期515-523,共9页Geoscience

摘　　要：通过在福建省泉州市惠安县聚龙小镇地区进行地热水探测以解决当地的温泉洗浴用水问题。该区域主要为燕山晚期二长花岗岩,通过采用可控源音频大地电磁法(CSAMT),在深部从构造分析出发,共布设了6条CSAMT勘探线,共166个测点,测线总长度3.96 km。在对野外数据进行了采集、处理、反演、解释之后,根据反演解释结果共发现3条断裂构造,确定了4个可能含水的低阻带,查明了区域内含水层系的埋藏深度。在此基础之上,进行了1口地热井的施工,井深1 150 m,井底温度44℃,井口出水量600 m^(3)/d,出水温度34℃,很好地验证了CSAMT在花岗岩地区进行地热水探测的实用性和有效性。This study attempts to solve the local hot spring bath water problem by conducting geothermal water exploration in Julong Town(Hui’an County, Quanzhou City), Fujian Province. This area contains mainly late Yanshanian feldspar granite. This study uses the Controlled Source Audio Magnetotelluric Method(CSAMT). Starting with deep structural analysis, a total of six CSAMT exploration lines are arranged, with 166 measurement points and a total length of 3.96 km. After collecting, processing, inverting, and interpreting the field data, three fault structures were identified, along with four low-resistance zones with possible water cut. Burial depth of the aquifer system in the area was also determined. Accordingly, a geothermal well(1,150 m deep) was excavated, yielding 600 m^(3)/d water output and 34 ℃ water temperature, which supports the CSAMT results for geothermal water exploration in granite areas.

关 键 词：CSAMT 地热勘查 地热 惠安 

分 类 号：P62[天文地球—地质矿产勘探]