一、消力戽的实践在寻求水工建筑物水流衔接的消能方式过程中,当尾水深度超过完全水跃消能所需的尾水深度时,(如10％),常采用消力戽消能。因为它具有一个大挑角的淹没鼻坎,利用下泄水流,经鼻坎作用,发生漩滚扩散,消杀能量,以减轻戽后局部冲刷。国外从40年代就利用消力戽消能。1941年美国大库利坝采用消力戽。随着工程实践和试 First, the practice of Xiaoyu 水 Hydraulic building in the process of seeking energy convergence mode, when the tail water depth exceeds the depth of the tail water required for full hydro-energy dissipation (such as 10%), often using the power dissipating戽 energy dissipation. Because it has a large angle of the submerged nose ridge, the use of drainage water flow through the nose role, the occurrence of swirling diffusion, kill energy, in order to reduce the local scour after scallions. Abroad from the 40’s on the use of dissipative 戽 energy dissipation. In 1941 the United States Koray dam using consumer 戽. With engineering practice and trial