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溢洪道设计出现一种新的型式，其特点是利用岩石开挖后不衬砌粗糙岩面，将消能分散在泄槽的沿程上。这种沿程消能工可分为两种类型：一种是纵坡为直线的岩面不衬砌粗糙泄槽消能；另一种是将岩石开挖成阶梯状，不衬砌跌水消能。通过水力学模型试验和已建工程的调研总结出设计准则，在一定的纵坡、跌差、弯道半径和单宽流量条件下，不衬砌岩面不出现空化和冲蚀破坏，并达到消能目的。故这种造价低廉、安全可靠的溢洪道成为一种新型的设计方案，并以实际工程说明。
A new type of spillway design emerges, characterized by the use of rock excavated without lining rough rock faces, dissipating energy along the gutter. This along the road energy dissipater can be divided into two types: one is the slope of a straight line for the face of the rock is not lined with rough drain dissipation; the other is the rock excavated into a ladder-like, . Through the research on hydraulic model test and built project, the design criteria are summarized. Under certain conditions of longitudinal slope, drop, radius of bend and single-wide flow, cavitation and erosion damage are not observed in the non-lining rock face, Energy-saving purposes. Therefore, such a low-cost, safe and reliable spillway has become a new type of design scheme, and the actual project description.