众所周知,大坝建成蓄水后,由于库水位作用,导致坝体、坝肩和坝基出现渗流现象,这对大坝安全是不利的,但又是不可避免的。渗流异常是大坝失事的重要原因,大坝渗流问题成为大坝设计、施工、运行管理的关键课题,受到国内外坝工界高度重视。为监视土坝在渗流作用下是否正常和稳定,以便采取正确的运用方式或进行必要的处理,保证工程安全,应进行渗透观测。土坝渗透观测主要包括:土坝浸润线、土坝的渗透流量、绕 As we all know, after the dam is built, the seepage phenomenon of the dam body, dam abutment and dam foundation is caused by the effect of reservoir water level, which is unfavorable to dam safety but inevitable. The seepage anomaly is an important reason for the dam failure. The seepage problem of the dam has become a key issue in dam design, construction and operation management and is highly valued by dam industry at home and abroad. In order to monitor whether the earth dam is normal and stable under seepage, in order to adopt the correct application mode or carry out the necessary treatment to ensure the safety of the project, the observation of the seepage should be carried out. Earth dam infiltration observation mainly includes: earth dam infiltration line, earth dam infiltration flow, around