柬埔寨额勒赛下游水电站混凝土面板堆石坝面板裂缝成因及处理

Cause analysis and treatments of face cracks for concrete face rockfill dam of Elesai Downstream Hydropower Station in Cambodia

柬埔寨额勒赛下游水电站上电站面板堆石坝施工时,一期混凝土面板浇筑后出现集中裂缝,根据现场情况分析,大坝不均匀沉降是面板产生裂缝的主因,坝内反向水压加剧了裂缝和变形的发展。介绍了面板裂缝的处理措施和处理效果,总结了面板施工中的经验和教训。

In the first phase construction process of concrete face rockfill dam of Elesai Downstream Hydropower Station in Cambodia,intensive cracks appeared on the face after the concrete pouring. According to the situation analysis,the main cause of cracks on face is the differential settlement of dam and the reverse water pressure inside the dam intensified the development of cracks and deformations. This paper introduced the treatments of the cracks and its effect,and summarized the experience and lessons in the construction process of concrete face.