洪家渡混凝土面板堆石坝设计

洪家渡水电站拦河坝为混凝土面板堆石坝，最大坝高179．5m，为目前国内外高面板堆石坝之一。坝址处于高山峡谷岩溶地区，河谷狭窄，岸坡陡峻，在洪家渡面板堆石坝设计过程中，围绕减少岸坡开挖和填筑工程量，减小坝体不均匀沉降，确保止水效果等关键技术问题进行了深入研究，就堆石坝的布置、坝体分区、趾板布置、周边缘结构、坝顶结构等进行优化设计，取得了显著的经济效益和社会效益。

Design of Hongjiadu Concrete Face Rockfill Dam

The dam across river for the Hongjiadu Hydropower Station is a concrete face rockfill dam with the maximum height of 178.5 m, one of high face rockfill dam at home and abroad at present. The damsite is located in the karst area in a high mountain and narrow valley. In the design of the Hongjiadu concrete face rockfill dam, the following key technical problems have been deeply studied, such as how to reduce the excavation and fill volume at the bank slope, to decrease non uniform settlement, and to guarantee the watertight effectiveness. The optimal design also has been made on the layout of rockfill dam, the zoning of dam body, the arrangement of dam toe slab, the peripheral joint structure and the dam top structure, etc. Therefore the outstanding economic and social benefits have been gained.