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我国是修建中低拱坝最多的国家，自本世纪７０年代以来大部分拱坝采用了坝顶溢流的泄洪方式。本文以万家沟水库拱坝溢流坝的设计为例，阐述了这种坝型设计及施工的一些特殊问题及解决方法。混凝土溢流坝的施工，大中型工程多采用滑模，速度快、省投资，但中小型工程多没有滑模设备，万家沟工地自制了简易滑模，高质量高效率地进行了溢流坝的施工，为同类工程提供了有益的借鉴。
China is the country where most low and medium arch dams are built. Since the 1970s, most arch dams have adopted the flood discharge method of dam crest overflow. Taking the design of overflow dam of Wanjiagou Reservoir arch dam as an example, some special problems and solutions of such dam design and construction are expounded. Concrete spillway dam construction, large and medium-sized projects to use more sliding mode, fast, provincial investment, but more than small and medium-sized projects without sliding mode equipment Wanjiagou site made a simple sliding mode, high-quality and efficient overflow Dam construction, for similar projects provide a useful reference.