里墩水库溢洪道原设计采用光滑收缩陡槽后接消力池的布置方案。为优化溢洪道的消能工型式,进行了水工模型试验研究。针对因陡槽收缩引起的消力池内产生大回流、水流振荡激烈、消能不充分等不良现象, 进行了多组消能布置的试验比较, 提出了阶梯式等宽陡槽后接渐缩消力池的联合消能型式 The original design of the Roudun reservoir spillway adopts the plan of the smooth shrinking chute followed by the stilling pool. In order to optimize the energy dissipater type of spillway, a hydraulic model test was conducted. Aiming at the adverse phenomena such as large backflow generated in the stilling pool caused by the contraction of the steep channel, intense water oscillation and insufficient energy dissipation, a series of experimental experiments on energy dissipation arrangements were carried out. Power pool combination of energy-saving type