根据三峡工程二期围堰结构要求,提出了防渗墙墙体材料的技术指标。通过墙体材料筛选优 化,推荐的塑性混凝土具有能适应堰体要求的各种性能。并对塑性混凝土进行了三轴测试和 应 力应变计算分析以及现场监测,结果表明其性能达到了设计要求。经过一年多的运行考验, 塑性混凝土防渗墙是安全的。

According to structural features of Three Gorges Project(TGP) cofferdam Ⅱ,techn ical indices of materials used for impervious core wall are presented. Through s electing and optimizing,the mix proportion of plastic concrete for core wall was recommended.Triaxial shear tests and stressstrain behaviour analysis were carr i ed out on this material.In addition,laboratory study and insitu monitoring res ults concluded that the properties of plastic concrete achieved all design requi r ements.Normal operation over one year proved the plastic concrete cutoff wall being safe.