物探综合方法在岩溶区岩土工程勘察和施工中的应用  

Application of Geophysical Comprehensive Method in Geotechnical Engineering Investigation and Construction in Karst Areas

作　　者：王龙 万晓锋 韩鹏 Wang Long;Wan Xiao-feng;Han Pen(Shaanxi Branch of China Geological Exploration Center of Build-ing Materials Industry,Xi′an Shanxi 710003,China;Geological Engineering Reconnaissance Institute of Xi′an Building Materials Co,Ltd,Xi′an Shanxi 710003,China)

机构地区：[1]中国建筑材料工业地质勘查中心陕西总队,陕西西安710003 [2]西安建材地质工程勘察院有限公司,陕西西安710003

出　　处：《西部探矿工程》2023年第9期1-4,11,共5页West-China Exploration Engineering

基　　金：中国建筑材料工业地质勘查中心陕西总队科研立项。

摘　　要：在我国喀斯特地貌分布地区,溶洞极为发育,地下岩溶发育会给公路工程的建设和安全运行产生较大影响。为了查明某公路桥梁灰岩区地下的岩溶发育情况,在工程初勘阶段利用高密度电法、在详勘阶段利用跨孔电磁波CT、在施工阶段利用桩底溶洞探测指导桩基终孔。3种物探方法由面到点,测试成果相互验证,优势互补,有效避免了单一物探方法造成的多解性,在岩溶探测方面取得了较好的效果,其探测结果可以作为公路工程建设勘察资料的一部分。In Karst landform distribution areas,karst caves are ex⁃tremely developed,and the development of underground karst will have a great impact on the construction and safe operation of high⁃way projects.In order to explore the development of underground karst in the highway bridge section of a limestone area,a high-densi⁃ty electric method was arranged in the preliminary survey stage,a cross-hole electromagnetic wave CT was used in the detailed survey stage,and a pile bottom cave detection was used to guide the final hole of the pile foundation during the construction stage.The three geophysical exploration methods are detected from surface to point,and the results are mutually verified and complement each other ad⁃vantages,which effectively avoids the multi-solution of the results of a single geophysical exploration method and achieves good results in karst detection.Detection results can be used as part of the sur⁃vey data of highway engineering construction.

关 键 词：岩溶勘察 综合物探 高密度电法 跨孔电磁波CT 桩底溶洞探测 

分 类 号：P642[天文地球—工程地质学]