西藏高海拔复杂气候条件下碾压混凝土筑坝关键技术  

Key Technology of RCC Dam Construction under High Altitude and Complex Climate Conditions in Tibet

作　　者：胡中阔 HU Zhongkuo(Sinohydro Bureau 9 Co.,Ltd.,Guiyang,Guizhou,550081)

机构地区：[1]中国水利水电第九工程局有限公司,贵州贵阳550081

出　　处：《红水河》2021年第4期6-11,31,共7页Hongshui River

基　　金：中国电力建设股份有限公司科技项目(DJ-ZDXM-2019-16)。

摘　　要：西藏高海拔地区气候特点为气压低、昼夜温差大、多风、干燥、太阳辐射异常强烈,该气候条件对碾压混凝土筑坝施工影响极大。通过开展专项研究,在配合比设计优化、VC值动态控制、层间结合、坝体防渗、温控防裂等方面形成了一套针对西藏高海拔复杂气候条件下的碾压混凝土筑坝关键技术,解决了碾压混凝土层间结合、温控防裂等关键性技术问题,可供类似工程参考借鉴。The climate characteristics of high altitude areas in Tibet are low air pressure,large temperature difference between day and night,windy,dry and extremely strong solar radiation,which have great influence on RCC dam construction.Through special research,a set of key technologies for RCC dam construction under high altitude and complex climate conditions in Tibet has been formed in aspects of mix proportion design optimization,dynamic control of VC value,interlayer bonding,dam seepage prevention,temperature control and crack prevention,which solves the key technical problems of RCC interlayer bonding,temperature control and crack prevention,and can be referred for similar projects.

关 键 词：西藏 高海拔 复杂气候条件 碾压混凝土 筑坝 关键技术 

分 类 号：TV544.921[水利工程—水利水电工程]