基于探地雷达技术的海砂覆土中供水管道漏损检测试验研究  

Leakage Detection of Water Supply Pipeline Based on GPR Under Marine Sand Medium

作　　者：叶子豪 申永刚[1] 张燕[1] 李康均 Ye Zihao;Shen Yonggang;Zhang Yan;Li Kangjun(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;Hydro China Huadong Engineering Corporation,Hangzhou 311122,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]中国电建集团华东勘测设计研究院有限公司,杭州311122

出　　处：《科技通报》2022年第10期59-64,共6页Bulletin of Science and Technology

摘　　要：管道漏损是供水系统长久以来面临的难题,漏损检测研究一直备受学者关注。探地雷达因其高效、无损的特点,常被用于管道漏损检测。本文通过漏损模拟试验和正演模拟试验,对海砂介质中的供水管道漏损特征进行研究。结果表明,探地雷达难以检测敷设在海砂介质中的管道,而漏损水流能够降低介质电导率,当管道漏损发生后,湿润区域处的反射能量明显增强,可根据能量反射强度的变化来对海砂覆土中的漏损区域进行定位。Pipeline leakage is a long-term problem faced by water supply systems,and the research of leakage detection has always attracted the attention of scholars.GPR is often used for pipeline leakage detection because of its high efficiency and non-destructive characteristics.In this paper,the leakage characteristics of the water supply pipeline in the marine sand medium are studied by field leakage simulation test and forward modeling test.The result shows that GPR is difficult to detect the pipeline laid in the marine sand medium,and the leakage water can reduce the conductivity of the medium.When the pipeline leakage occurs,the reflected energy in the wet area is significantly enhanced,and the leakage area can be located according to the change of energy reflection intensity.

关 键 词：海砂介质 供水管道 探地雷达 漏损检测 正演模拟 

分 类 号：TU991.36[建筑科学—市政工程]