摘要
在严寒地区,碾压混凝土坝选择何种防渗形式,以解决高抗冻、防裂、防渗的问题是目前关注的重要课题之一。从我国已建、在建工程实例和分析研究看出,只要做到精心施工,"二级配碾压混凝土+变态混凝土"防渗结构其防渗体抗渗等级可以达到W8～W11,能够满足高坝的防渗要求,加之不存在异种混凝土结合问题,施工干扰小,在严寒地区采用"二级配碾压混凝土+变态混凝土"的防渗结构技术上可行,经济上具有明显效益。
The seepage control for the RCC dams in cold regions is one of important issues of concern at present. The studies on the impervious structures of dams which having been built or under construction show that the impermeability grade of impervious structure using two-graded RCC and distorted concrete can reach W8 - W11 when the construction is careful, and the requirements on seepage control for high dams can be met. As no combination of heterogeneous concrete and less construction disturbance, the impervious structure using two-graded RCC and distorted concrete is technically feasible for the seepage control of darns in cold regions, and the application also has significant economic benefits.
出处
《水力发电》
北大核心
2011年第3期42-44,共3页
Water Power
