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一、引言泄水建筑物是调节水库的重要设施,通常采用的型式有:坝身泄水底孔、虹吸式溢洪道、开敞式泄洪陡槽、泄洪隧洞、泄洪竖井及坝顶溢流段等等。当它建筑在含有泥沙的平原河流或悬移质和推移质含量更大的山区河流上。泄洪过水时,在高速含沙水流冲刷和气蚀作用下,会遭到不同程度的磨损和破坏,甚至导致严重的失事。因此,在设计中必须对此问题加以重视并采取相应措施。对建筑物过水表面的体形
I. INTRODUCTION Drainage structures are important facilities for regulating reservoirs. Common types of dredging are: dyke ditches, siphon spillways, open discharge spillways, flood discharge tunnels, spillway silos and crest overflow sections, etc. . When it is built on a plains river containing sediment or a suspended mountain river with a greater bedrock content. Flood discharge of water, in the high-speed sandy erosion and cavitation erosion, will be subject to varying degrees of wear and tear, and even lead to serious crashes. Therefore, we must pay attention to this issue in design and take corresponding measures. The shape of the building over the water surface