中文摘要：

针对真金万水库溢洪道出口水流流速快、冲刷右岸边坡的问题，通过水工模型试验研究，取消了原设计方案中阶梯溢洪道下游消力池，而在溢洪道末端增设扭曲挑坎，并对扭曲坎进行优化，提出了利用两边直线段加中间小圆弧斜切挑坎的扭曲坎体形，获得了较好的水舌分散效果和入流流态。推荐方案的试验结果表明：阶梯＋扭曲挑坎联合消能方案能够很好地解决真金万水库溢洪道的消能防冲问题，且阶梯和扭曲坎自身结构安全满足工程要求。

英文摘要：

Aiming at settling the issue of high velocity of Zhenjinwan Reservoir spillway outlet and the scour of the right side slope of downstream river caused by the plunging flow,we abolished the stilling pool downstream of the spillway and instead set a skew bucket which was chamfered with straight lines on the two sides and a small arc in the middle was increased at the end of the spillway based on hydro-model test. Our test on the rec-ommendation scheme shows that the＆quot;steps and skew bucket＆quot; joint energy dissipation is a good solution to the Zhenjinwan Reservoir spillway energy dissipation and erosion problems,at the same time both the steps and the skew bucket are safety in structure.