基于拟流场法的堤坝管涌三分量渗漏检测仪设计及应用  

Design and application of three component seepage detectinginstrument for dam piping based on flow-field fitting method

作　　者：卢迪 王永兵 莫荣华 张磊 LU Di;WANG Yongbing;MO Ronghua;ZHANG Lei(Hunan Geosun High-Tech Co.,Ltd.,Changsha 410208,China;Hunan Deep Earth Resources Electromagnetic Exploration Engineering Technology Research Center,Changsha 410208,China)

机构地区：[1]湖南继善高科技有限公司,湖南长沙410208 [2]湖南省深地资源电磁法勘探工程技术研究中心,湖南长沙410208

出　　处：《水利水电快报》2024年第10期62-67,73,共7页Express Water Resources & Hydropower Information

基　　金：国家重点研发计划项目(2022YFC3005500)。

摘　　要：为提高在复杂水环境下堤坝管涌渗漏探测的准确度,从而更好地服务于病险堤坝管涌渗漏查险需求,从深入剖析拟流场法的场强值空间XYZ三个分量(简称三分量)特征入手,分析不同管涌渗漏水域对场强值的影响,采用三分量合成总场强值的方法,消除了探头姿态变化对场强值的影响。设计了一种基于拟流场法的堤坝管涌三分量渗漏检测的仪器。仪器应用测试结果表明:在稳定场情况下,连续缓慢旋转探头,三分量总场强值基本保持稳定,变化幅度小于11.1%,在小信号情况下更稳定、更灵敏,与单一分量对比,幅度增强93.8%,且在远离水底条件下也能够准确检测到管涌渗漏入水口异常信号。研究成果可为堤防、堤坝群等存在的滑坡坍塌、裂缝、管涌渗漏等隐患排查提供参考。In order to research the methods for improving the accuracy of dam piping and seepage detection in complex underwater environments,and better serve the needs of dam piping and seepage detection for dangerous situations.The research started with an in-depth analysis of the characteristics of space XYZ three components of the field strength value base on flow-field fitting method,analyzed the impact of different piping or seepage waters on the field strength value.The method of synthesizing total field strength values by using three components eliminated the influence of probe attitude changes on field strength values.We designed a three component seepage detecting instrument in dam piping based on flow-field fitting method.Application tests of the instrument showed that under stable field conditions,the total field strength of the three components remained basically stable by continuously and slowly rotating the probe,with a variation amplitude of less than 11.1%.It is more stable and sensitive under small signal conditions,with an increase of 93.8%in amplitude compared to a single component.Moreover,abnormal signals of piping or seepage inlet can be accurately detected even when far from the bottom of the water.The research results can provide a reference for the investigation of disaster causing and hidden danger factors such as landslides,collapses,cracks,pipe surges and leaks in embankments,dam groups,etc.

关 键 词：管涌 渗漏检测仪 拟流场法 三分量 

分 类 号：TV871[水利工程—水利水电工程]