三板溪水电站高堆石坝面板防裂措施

Crack Control Measures for The Face of High Rock-fill Dam of Sanbanxi Hydropower Station

三板溪水电站主坝为钢筋混凝土面板堆石坝,坝高185.5 m,为目前同类坝型中世界第三、中国第二高坝。该大坝在施工过程中采取的“一枯拦洪”和快速施工法等施工技术创国内先进水平,同时对高面板坝在快速施工的情况下面板防裂技术的探索与实践也取得了可喜的成绩,为今后同类型工程施工总结了一些有价值的经验。

The main dam of Sanbanxi Hydropower Station is reinforced concrete face rock-fill one with a height of 185.5 m, which is the second height of same type dams in China, and third in the world. During the construction period, we applied many advanced construction technology, including closuring flood in the first drought period, fast construction method, etc. Especially, we got good achievement on crack control of high concrete face rock-fill dam under rapid construction conditions. From it, we summarized a lot of valuable experiences as reference for other similar projects.