摘要
老渡口水电站在河床趾板基础下被深近40 m的砂砾石覆盖层,为减少大坝开挖回填工程量,节约工程投资,河床趾板前设钢筋混凝土防渗墙防渗。在防渗墙施工存在诸多困难的情况下,采用在动水环境下左右岸分期成墙的施工方法,达到了防渗挡水的目的。
In Laodukou hydropower station , sand gravel overburden layer about 40 m deep is found in the riverbed foun-dation below the toe slab .In this case , reinforced concrete diaphragm wall is built before the toe slab in the riverbed to reduce the foundation excavation and backfill work and to save project investment .A two-stage construction technique is adopted to complete the construction in the left and right bank separately .Satisfactory results are achieved in practice .
出处
《水电与新能源》
2014年第8期21-24,共4页
Hydropower and New Energy
关键词
基础防渗
防渗墙
施工方法
seepage control
diaphragm wall
construction technique
