对陡槽、鱼道、台阶式溢流坝等不同建筑物在相当大糙率情况下的消能情况比较证明 ,台阶式溢流坝的工作情况具有许多特性 ,需要进行专门的试验研究。对光滑流线型堰顶的台阶式溢流堰的水力工作状况作了研究 ,介绍了试验装置 ,估算溢流面上水头损失的方法 ,溢流面构造及研究成果 ,并得出了一些结论 The comparison of the energy dissipations of different structures such as steep grooves, fish tracks and stepped overflow dam under the conditions of considerable roughness shows that the operation of the stepped overflow dam has many characteristics and requires special experimental study. The hydraulic working conditions of the stepped overflow weir at the top of the smooth streamline weir are studied. The experimental device, the method of estimating the head loss on the overflow surface, the structure of the overflow surface and the research results are introduced, and some conclusions are drawn