直孔水电站混凝土防渗墙施工质量控制

Construction Quality Control of Concrete Cut-off Wall of the Zhikong Hydropower Station

西藏直孔水电站堆石坝基础采用混凝土防渗墙。该防渗墙建在高海拔地区的松散砂卵石强透水地层中,为保证工程质量,在施工工序、施工工艺、冬季施工以及质量控制等方面,采取了一系列措施。这些为高海拔地区防渗墙施工质量控制提供了可操作的参考依据。

The foundation of rockfill dam for Tibet Zhikong Hydropower Station adopted concrete cut-off wall that is built in strong pervious stratum with loose sand-pebble in high elevation area. In order to ensure the quality of the project, the Station take a series of measures. It＇s provide application and reference value for the quality cortrol project construction in high altitude area.