九井岗水电站拱坝是安徽省已建和在建仅有的两座百米级大坝之一,也是安徽省第一座全断面埋设冷却水管强制降温的常态混凝土坝和最高的薄拱坝。大坝的泄洪建筑物布置、坝肩不稳定岩体处理、温控设计等具有显著特色。文章对该拱坝的体型设计、结构布置、坝基处理等进行详细了介绍,可供同类工程参考。 The Jiujingang Hydropower Station Arch Dam is one of only two 100-meter-long dams already built and under construction in Anhui Province. It is also the first normal concrete dam and the highest thin-arch dam . Flood discharge dam layout of the dam, unstable rock abutment treatment, temperature control design has significant features. The article introduces the body design, structure arrangement and dam foundation treatment of the arch dam in detail, which can be used for reference of similar projects.