水布垭堆石坝混凝土面板抗裂设计与工程实践

Anti-crack design for concrete slab of Shuibuya rock-fill dam

堆石坝混凝土面板普遍存在裂缝问题,影响坝体防渗效果和使用耐久性,一定程度上制约了堆石坝规模,因此混凝土面板抗裂设计是堆石坝的重要技术问题之一。针对堆石坝混凝土面板裂缝的成因,结合目前世界上该坝型最高的水布垭枢纽堆石坝工程,全面、具体、系统地介绍了200m级堆石坝混凝土面板的综合工程措施。

Crack is a common problem existed in concrete slab of rock-fill dam, which affects seepage and endurance of embankment and becomes a restrict factor for the scale of rock-fill dam. Thus anti-crack design of concrete slab is the key technical issue of the rock-fill dam. Considering the reasoning of cracks of concrete slab, comprehensive engineering measures for the concrete slab of 200m rock-fill dam is introduced systematically, with the typical case of Shuibuya - the current highest rock-fill dam in the world.