外掺MgO混凝土快速筑拱坝技术及其应用  

Application of fast damming technology admixed with MgO expansive concrete in arch dams

作　　者：李承木[1] 李万军[2] 

机构地区：[1]中国水电顾问集团成都勘测设计研究院科研所,四川成都610072 [2]四川省水利水电勘测设计研究院,四川成都610072

出　　处：《水利水电科技进展》2011年第6期41-45,84,共6页Advances in Science and Technology of Water Resources

基　　金：广东省水利厅科研项目(2000-21);水利部"948"科研基金(CT200513)

摘　　要：归纳总结了采用全坝外掺MgO混凝土不分横缝或设少量诱导缝快速筑拱坝技术建成的混凝土拱坝,介绍各拱坝的工程特征、施工情况、MgO掺量、长期观测的混凝土自生体积变形、应用新技术后的经济效益等基本情况。工程实践表明,采用外掺MgO混凝土快速筑拱坝技术建坝是成功的,能缩短工期并获得较大的综合经济效益。认为该技术值得在各类混凝土坝中推广应用。The arch dams built by means of the fast construction technology admixed with MgO expansive concrete and without arrangement of horizontal joints （or with arrangement of a few guiding joints） were summarized. Their engineering characteristics, construction situations, quantity of MgO, long-term volumetric deformation of the concrete and economic benefits after using the new technology were introduced. The engineering practices show that the fast construction technology admixed with MgO expansive concrete is successful. It can reduce the construction time and results in significant economic benefits. The proposed technology should be popularized in various kinds of concrete dams.

关 键 词：混凝土拱坝 外掺MGO 分层通仓浇筑 筑坝技术 

分 类 号：TV544[水利工程—水利水电工程]