北京小汤山地区第四系高氟地下水与地热水关系研究  

Study on the Relationship between Quaternary High-fluorine Groundwater and Geothermal Water in Xiaotangshan Area,Beijing

作　　者：刘宗明 孙少游 马静晨 郭帅 李翔 LIU Zongming;SUN Shaoyou;MA Jingchen;GUO Shuai;LI Xiang(Beijing Institute of Geology,Beijing 100195;Key Laboratory of Shallow Geothermal Energy,Ministry of Natural Resources,Beijing 100195;Beijing General Municipal Engineering Design&Research Institute Co.,Ltd.,Beijing 100082;Beijing Institute of Engineering Geology,Beijing 100084)

机构地区：[1]北京市地质矿产勘查院,北京100195 [2]自然资源部浅层地热能重点实验室,北京100195 [3]北京市市政工程设计研究总院有限公司,北京100082 [4]北京市工程地质研究所,北京100084

出　　处：《地球学报》2024年第1期63-72,共10页Acta Geoscientica Sinica

基　　金：北京市自然科学基金项目(编号:8181002)资助。

摘　　要：北京小汤山地区第四系深层地下水氟含量普遍超标,严重制约区域供水。在收集整理基础地质、水文地质、地热地质资料基础上,开展第四系高氟地下水与地热水之间关系研究工作。研究表明:小汤山地区位于复式背斜的核部区域,该区热储层与第四系地层直接接触并形成水力“天窗”,受构造应力影响在热储层发育大量张性裂隙,加之上覆第四系盖层结构松散且厚度较薄,导致该区成为地热富集带;在高温高压环境下,地热水中氟化物含量普遍较高,地热水上涌同第四系深层地下水发生热流-冷流的混合作用,导致第四系深层地下水中氟化物含量升高,形成第四系高氟地下水。The fluorine content of deep groundwater generally exceeds the standard in Xiaotangshan area of Beijing,which seriously restricts the regional water supply.Based on the collection of basic geological,hydrogeological,and geothermal geological data,the relationship between quaternary high-fluorine groundwater and geothermal water was studied.The study showed that Xiaotangshan area is in the nuclear part of the anticline.In this area,the geothermal reservoir is in contact with the quaternary strata.Under the influence of tectonic stress,a large number of tensile fractures have developed in the geothermal reservoir.Moreover,as quaternary strata are loose and thin,this area has become a geothermal enrichment zone.Under high temperature and pressure,the fluoride content of geothermal water is generally high.Because of the mixing of geothermal water and quaternary deep groundwater,the fluoride content of quaternary deep groundwater increases and high-fluoride groundwater is formed.

关 键 词：城市地质 高氟地下水 地热水 热储层 

分 类 号：P641.3[天文地球—地质矿产勘探]