沙牌拱坝碾压混凝土浇筑中的关键技术研究

Study on the key techniques of Shapai roller compacted concrete arch dam construction

沙牌拱坝 (坝高 13 2m)是目前世界上最高的碾压混凝土拱坝。本文结合沙牌大坝对 10 0m级以上高碾压混凝土拱坝施工中的关键技术 ,如混凝土真空溜管入仓工艺、改性混凝土扩大使用范围、坝面作业、冬季施工等进行了详细地分析与研究 ,并提出了相应的解决方法。其研究成果的应用可以提高我国高碾压混凝土拱坝的施工水平 。

Shapai arch dam with height of 132m is the highest roller compacted concrete arch dam in the world at present.Some key techniques of construction of high RCC arch dam with height of above 100m are analyzed and studied in the paper,such as concrete vacuum pipe,expansile use scope of advanced concrete,construction on the dam,construction in the winter,and the corresponding solving method is proposed.The research results enhance the construction level of high RCC dam in our country and bring the benefits to the construction of some similar projects.