临汾地震监测中心站深井地电阻率观测场地地质条件分析  

Analysis of Geological Conditions of Deep Well Earth Resistivity Observation Site of Linfen Earthquake Monitoring Center Station

作　　者：靳宝萍 张亮娥[2,3] 张聪聪[1,3] 荆红亮[1,3] 杨静[1,3] 李军[1,3] JIN Bao-ping;ZHANG Liang-e;ZHANG Cong-cong;JING Hong-liang;YANG Jing;LI Jun(Linfen Earthquake Monitoring Center Station, Shanxi Earthquake Agency, Linfen, Shanxi 041000, China;Taiyuan Earthquake Monitoring Center Station, Shanxi Earthquake Agency, Taiyuan, Shanxi 030025, China;National Continental Rift Valley Dynamics Observatory of Taiyuan, Taiyuan, Shanxi 030025, China)

机构地区：[1]山西省地震局临汾地震监测中心站,山西临汾041000 [2]山西省地震局太原地震监测中心站,山西太原030025 [3]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《山西地震》2022年第1期40-44,共5页Earthquake Research in Shanxi

摘　　要：临汾地震监测中心站于2020年7月开始深井地电阻率观测系统建设,在施工过程中,发现观测场地地下具有较复杂的地质构造,存在大量裂隙,岩溶较为发育。应用高密度电法、钻井资料及建立井下视频系统场地三维地质模型,分析观测场地地质条件。结果表明,该场地地层岩性由上至下依次为黄土、砂砾层、灰岩层,灰岩层裂隙岩溶较发育,存在于地表下52~90 m之间,地下102 m处溶洞发育。该结果可为后期观测数据曲线特征分析、异常落实提供地质条件方面的参考依据。Linfen Earthquake Monitoring Center Station carried out the construction of deep well earth resistivity observation system in July 2020.During the construction process,it was found that the underground of the observation site has complex geological structure,there are a large number of fractures and karst is relatively developed.The geological conditions of the observation site are analyzed by using high-density electrical method,drilling data and establishing a three dimensional(3D)geological model of the underground video system site.The results show that the formation lithology of the site is loess,gravel layer and limestone layer from top to bottom.The fracture karst of limestone layer is relatively developed,which exists between 52~90m below the surface and the karst cave is developed at 102m underground.The results can provide geological basis for curve characteristic analysis and anomaly implementation of later observation data.

关 键 词：深井地电阻率 地质条件 三维地质模型 

分 类 号：P319.3[天文地球—固体地球物理学]