通过物理模型专题研究，并结合国内外相关研究成果，对阶梯式溢流面的消能特性作了较系统的探讨。论述了阶梯式溢流面消能率的影响因子及规律，研究表明，消能率大小与溢流面坡度关系不大，而与单宽流量、阶梯高度及数目存在着定量关系。
关 键 词： 阶梯式溢流面；光滑溢流面；消能率；相对消能率

Based on the related experimental results at home and abroad，the study on energy dissipation characteristic of the stepped spillway was systematically conducted by a hydraulic model. The affecting factors and regularities of energy dissipation ratio for the stepped spillway are summarized in this paper. The study results demonstrate that the ratio of energy dissipation is not basically relevant to the spillway slope，but has a quantitative relation with the discharge of per unit width，step height and step numbers.