摘要
建在高寒狭窄河谷中的高面板堆石坝,受地形对坝体拱效应影响,坝体变形具有梯度大、持续时间长等特点。针对坝址区冬季气温低、气温年变幅大、地形狭窄的不利因素,提出采取充分利用施工间歇期、控制坝体沉降速率、增加面板顶部厚度、增大挤压缝的宽度、改善止水结构、加强垫层料的设计等综合措施,控制坝体变形,保证坝体安全。
For high concrete face rockfill dam built in narrow valley of high-cold area,affected by the topography,the deformation of dam body is characterized by large gradient and longtime of duration.According to the unfavorable factors of low temperature in winter,large amplitude of annual temperature and narrow topography of the dam site,comprehensive measures such as making full use of the construction interval,controlling the setdement rate of dam body,increasing the top thickness of concrete face,enlarging the width of squeezing gap,improving the water-stop structure,and amending design of cushion material are taken to control the deformation of dam body and guarantee its safety.
出处
《水利水电工程设计》
2014年第4期1-2,38,共3页
Design of Water Resources & Hydroelectric Engineering
关键词
面板堆石坝
高寒
狭窄
变形
concrete face rockfill dam
high cold
narrow
deformation
