探地雷达和高密度电阻率法在坝体渗漏探测中的应用  

Application of GPR and high-density resistivity method to leakage detection of dam bodies

作　　者：葛双成[1] 梁国钱 陈夷[1] 孙伯永[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]浙江省钱塘江管理局,浙江杭州310016

出　　处：《水利水电科技进展》2005年第5期55-57,共3页Advances in Science and Technology of Water Resources

基　　金：浙江省自然科学基金资助项目(502020)

摘　　要：对某水库大坝背水坡同一高程上出现的3处渗漏点进行踏勘和分析,选用探地雷达和高密度电阻率法在坝顶设置3条纵测线进行探测.探测结果表明3处渗漏点的成因是以近水平疏松薄弱层为主要特征的坝体整体疏松性,并指出坝体疏松带的分布范围和特点.该探测结果与现场直观标志具有较好的相应性,并为开挖揭示所证实.The GPR and high-density resistivity method were used to investigate the three leakage points occurring at the same altitude on the back slope of a reservoir dam by setting of three longitudinal measuring lines on the top of the dam. The result shows that the loose structure of the dam body mainly characterized by the horizontal loose layers is the cause of formation of the leakage points. Meanwhile, the distribution and characteristics of the loose belts were identified. The detection result was in good agreement with the reality, and it was also verified in excavation.

关 键 词：土坝 坝体渗漏 隐患探测 探地雷达 高密度电阻率法 

分 类 号：TV698.12[水利工程—水利水电工程]