大隆水利枢纽坝基防渗墙施工技术

Construction technique of dam foundation cut-off for Dalong Water Control Project

在大隆水利枢纽坝基防渗墙施工过程中,通过生产性试验选择出了适合该防渗墙工程施工干扰大、工期紧、质量标准高的要求的施工技术,解决好了孔口塌孔的预防、处理及钢筋笼和预埋灌浆管下设等技术难题,保证了该防渗墙工程的成功建设。文中总结了该防渗墙施工在不同条件下采取的技术措施及经验。

During the construction of the dam foundation cut-off for Dalong Water Control Project, the construction techniques adaptable to the construction under the condition with high interference, short construction period and strict quality standard are selected through the related productive experiment, with which the problems such as the prevention and treatment of hole collapse and lowering steel reinforcement cage and pre-embedded grouting pipe into place are solved, and then the successful construction of the cut-off is guaranteed as well The technical measures applied in the construction and the experiences concerned are introduced herein.