摘要
在整理分析三溪浦水库维修加固后的渗流原型观测资料基础上,对水库的渗流状况进行评价,同时也对渗流观测数据与设计计算结果之间的差异成因进行分析,分析结果表明:坝体和坝基的渗流状态稳定;混凝土防渗墙的防渗效果明显。防渗墙下游侧的测点计算值与实测值之间差距较大,其主要原因是设计计算当中未能准确确定防渗墙的渗透系数以及坝基在长期渗流作用下渗透性已发生变化,同时也通过分析发现部分测点的埋设位置高于坝体浸润线,其测值已无法用于坝体渗流情况的分析评价。
Based on the analysis of seepage prototype observation data of Sanxipu dam, this paper evaluated the seepage status and analyzed the difference between the prototype seepage data and the design calculation results. The results showed that the seepage state of dam body and foundation was stable and the anti-seepage effect on the concrete impervious wall was obvious. The difference between the calculated value and the prototype seepage data on the downstream was large which was mainly caused by the unreasonable permeability coefficient of concrete impervious wall and the permeability variation of dam fundation. The analysis results also showed that the buried position of some measured points was higher than the seepage line of dam body, and the measured value could not be used for the analysis and evaluation of dam seepage status.
作者
朱朝阳
夏冰
刘海华
姜晓桢
ZHU Chaoyang;XIA Bing;LIU Haihua;JIANG Xiaozhen(Ningbo Hydraulic Waterpower Planning and Designing Research Institution,Ningbo 315192,China;The Management Office of Sanxipu Reservoir,Ningbo 315113,China;Nanjing Hydraulic Research Institute,Nanjing 210024,China)
出处
《人民珠江》
2018年第7期123-126,107,共5页
Pearl River
关键词
原型观测
大坝渗流
差异成因
prototype observation
dam seepage
difference origin
