基于超高密度电阻率法的工程场地溶洞探测试验研究  

Experimental Research on Karst Cave Detection in Engineering Site Based on Ultra-high Density Resistivity Method

作　　者：杨兆坚 陈煜烽 谢小荣 刘春林 杨学顺 胡贺松 李涛 YANG Zhao-jian;CHEN Yu-feng;XIE Xiao-rong;LIU Chun-lin;YANG Xue-shun;HU He-song;LI Tao(Guangzhou Testing Centre of Construction Quality and Safety Co.,Ltd.,Guangzhou 510440;Guangzhou Construction Engineering Co.,Ltd.,Guangzhou 510030;Guangzhou Institute of Building Science Group Co.,LTD.,Guangzhou 510440)

机构地区：[1]广州建设工程质量安全检测中心有限公司,广州510440 [2]广州建筑股份有限公司,广州510030 [3]广州市建筑科学研究院集团有限公司,广州510440

出　　处：《广州建筑》2024年第3期27-30,共4页GUANGZHOU ARCHITECTURE

基　　金：广州市建筑集团科技计划项目(2022-KJ005、2023-KJ032、2023-KJ049)。

摘　　要：溶洞的精准探测并采取相应的处理措施是保证工程建设安全的重要前提和保障。高密度电阻率法以地下岩石的导电性差异为主要物性基础探查岩石分布、垂向分层情况,对岩石的含水性尤为敏感。本文尝试采用超高密度电阻率法不同装置模式获得研究区的数据,经过预处理和反演得到研究区域的电性结构,揭示研究区地下溶洞的分布特征。经与地质资料对比,结果表明:超高密度电阻率法对于建筑场地的地层划分和了解岩层溶洞发育程度及分布范围具有良好的应用效果。Karst caves have a great impact on the safe construction and operation of engineering projects.The accurate detection of karst caves and the corresponding treatment measures are the important premise and guarantee for the safety and smooth progress of infrastructure construction projects.The resistivity method investigates the distribution and vertical stratification of rock based on the difference of electrical conductivity of underground rock,and is particularly sensitive to the water content of rock.In this paper,we try to obtain the data of the study area by using different device modes of ultra-high density resistivity method,obtain the electrical structure of the study area through preprocessing and inversion,and reveal the distribution characteristics of underground karst caves in the study area.By comparing with geological data,the results show that the ultra-high density resistivity method has a good application effect for the formation division of the building site and understanding the development degree and distributionrangeofrockcave.

关 键 词：溶洞 高密度电阻率法 电阻率反演 探测试验 

分 类 号：P319.1[天文地球—固体地球物理学]