摘要
狮子坪水电站大坝基础覆盖层深厚(最深达101.5 m),结构层次复杂,各层级配不均一,局部具架空现象,基础防渗处理难度大。河床基岩横断面为较对称的"V"型谷,谷坡陡峻,施工难度大。防渗墙穿过覆盖层深度大,为目前国内第一深墙(单孔最深101.8 m,槽孔平均深度100.23 m)。围绕狮子坪水电站坝基深厚覆盖层的性状、成因及防渗墙施工中出现的主要问题及处理措施进行了分析。
The dam foundation overburden at Shiziping hydropower station is very deep(the deepest is 101.5m) with complicated structures.Foundation seepage control treatment is very difficult because the overburden of the dam foundation is a kind of complicated and unhomogeneous stratum.The steep and V-shaped slope leads to difficult construction.The diaphragm wall is the deepest in China,the deepest hole is 101.8m and the average is 100.23m.This paper discusses the properties,genetic type of overburden and major problems in construction of diaphragm wall and treatment measures.
出处
《四川水力发电》
2010年第4期14-16,22,共4页
Sichuan Hydropower
关键词
狮子坪水电站
坝基
深厚覆盖层
防渗墙
Shiziping hydropower station
dam foundation
deep overburden
diaphragm wall
