深厚砂砾石覆盖层混凝土防渗墙墙段连接技术研究

摘要

阿尔塔什水利枢纽工程建在深厚的砂砾石覆盖层上,如何在保证施工质量的前提下,优化施工方案,改善防渗墙应力状况,是施工技术研究重点.通过对防渗墙的受力特性、深厚覆盖层的工程特性分析和研究,从防渗墙成墙槽段划分、墙段连接技术等关键技术上,进行优化施工方案,有效消减了防渗墙在坝体填筑和蓄水过程中的应力应变集中,保证防渗墙的成墙质量和运行效果.实践证明,防渗墙施工有关技术应用满足设计要求,也能改善防渗墙受力状况,为同类工程施工提供参考.%Aertashi Hydro Project is built on deep sand and gravel overburden.How optimize the construction scheme and improve the stress condition of cutoff wall under the premise of ensuring construction quality is the key of construction technology research.By analyzing the stress characteristics of cutoff wall and the engineering characteristics of deep overburden,key construction technologies,such as wall segment partition and wall segment connection technology,are optimized,that effectively improve the stress and strain condition of cutoff wall in dam filling and reservoir storage process and ensure the construction quality and operation of cutoff wall.Actual practice has proved that relevant construction technologies meet design requirements and can improve the stress condition of cutoff wall.