声呐渗流三维成像检测技术在大藤峡水利枢纽工程围堰渗流检测中的应用

Application of Sonar Seepage 3D Imaging Detection Technology in Seepage Detection of Cofferdam in Datengxia Hydro Project

渗流是水利工程施工和运行中普遍存在的棘手问题,而准确地检测渗流量和渗流位置是渗流治理的关键。笔者以大藤峡水利枢纽工程二道围堰基坑开挖施工中的渗流检测为例,介绍了声呐渗流三维成像检测技术的原理和检测方式,对检测得到的渗流量、渗透流速、渗流方向等数据进行分析。结果表明,现场检测得到的地下水渗流场数据,能精准地揭示围堰基坑开挖施工的渗流状况。该工程的成功应用经验,可为类似工程的渗流治理提供参考和借鉴。

eepage is a common and thorny problem in the construction and operation of hydraulic engineering and accurate detection of seepage flow rate and seepage location is the key to seepage control.Taking the seepage detection in the excavation of the second cofferdam foundation pit of Datengxia Hydro Project as an example the principle and detection method of sonar seepage 3D imaging detection technology are introduced and the data of seepage flow seepage velocity and seepage direction are analyzed.The results show that the data of groundwater seepage field obtained by field detection can accurately reveal the seepage condition of cofferdam foundation pit excavation construction.The successful application experience of this project can provide reference for seepage control of similar projects.