摘要
山西张峰水利工程大坝左坝肩低液限粘土坝基上设有混凝土防渗墙,墙身深入坝体心墙内,该墙是坝体防渗的关键部位。通过非线性数值分析方法,对采用不同材料和施工工艺情况下,防渗墙的应力进行了分析,得出:采用塑性混凝土可以减小墙体应力,提高墙体的抗裂性能;在坝体不高的情况下,调整施工工艺,将先打防渗墙后筑坝改为先填筑坝体再进行防渗墙施工的工艺,更将大幅度减少墙体应力,提高防渗墙的抗裂性能,从而将提高大坝的防渗性能。
In left dam abutment of Zhangfeng Hydraulic Project in Shanxi Province, a concrete cut-off wall is situated, which is the key part for the seepage control of the dam. With the nonlinear numerical analysis, the stress of the cut-off wall in different materials and different construction methods is analyzed. The results show that using the plastic concrete in cut-off wall can reduce the stress of the wall, and if the height of dam is low, constructing cut-off wall behind dam reclamation can greatly reduce the stress of the wall, and can decrease the crack resistance of the wall, so can improve the seepage control capability of the dam.
出处
《水利与建筑工程学报》
2007年第1期40-43,共4页
Journal of Water Resources and Architectural Engineering
关键词
水利水电工程
张峰水库
防渗墙
应力
hydraulic and hydroelectric engineering
Zhangfeng Reservoir
cut-off wall
stress
