软硬坝基先筑坝后建塑性混凝土防渗墙应力与变形分析  

Analysis of Soft and Hard Dam Foundation Stress and Deformation of Building the Plastic Concrete Impervious Wall after Dam Construction

作　　者：张周文 ZHANG Zhouwen(Zhongshan Water Resources and Hydropower Survey and Design Consulting Co.,Ltd.,Zhongshan 528403,China)

机构地区：[1]中山市水利水电勘测设计咨询有限公司,广东中山528403

出　　处：《广东水利水电》2022年第12期91-94,107,共5页Guangdong Water Resources and Hydropower

摘　　要：高达水库大坝左岸地形平坦地基覆盖层深厚且下伏基岩多层溶洞分布,河床洪坡积层虽厚度不大但透水性强且河床左侧地形陡峭基岩出露,大坝右岸边坡较缓覆盖残坡积土层,为适应不同坝基沉降变形采用先筑坝后成墙塑性混凝土防渗心墙土石坝方案,通过对不同坝高不同塑性混凝土配合比的防渗心墙应力与变形分析,选择高坝、低坝均适应的塑性混凝土配合比,对软硬坝基塑性混凝土防渗心墙的应力与变形分析表明满足要求,可为同类工程提供参考。The topography on the left bank of Gaoda reservoir dam is flat.The foundation cover is deep and the underlying bedrock multi-layer karst caves are distributed.The riverbed flood slope is not thick but the water permeability is strong.The topography on the left side of the riverbed is steep.The bedrock is exposed,and the slope on the right bank of the dam is slow covering the residual slope soil layer.The scheme of earth-rockfill dam with plastic concrete impervious core wall after dam construction is adopted in order to adapt to the settlement and deformation of different dam foundation.Through the analysis of the stress and deformation of the impervious core wall with different dam height and different plastic concrete mix ratio,the plastic concrete mix ratio suitable for both high dam and low dam is selected.The stress and deformation analysis of plastic concrete impervious core wall of soft and hard dam foundation shows that it meets the requirements and can provide reference for similar projects.

关 键 词：先筑坝后成墙 塑性混凝土 防渗心墙 配合比 高达水库 

分 类 号：TV543.82[水利工程—水利水电工程]