陆水蒲圻水利枢纽三号副坝,修建在右岸导流明渠的开挖石渠上.渠谷狭窄,渠底高程高于主坝址河床高程.增设三号副坝泄洪建筑物辅助主溢流坝泄放大于20年一遇的洪水,并兼放空水库之用.1965年在设计和试验人员密切配合下,经模型试验,选定了一种简化的低鼻坎消能工方案.试验表明, Lushui Buxus Hydropower Complex on the 3rd Deputy Dam, built on the right bank diversion canal excavation of the ditch. Narrow canal valley, channel bottom elevation higher than the main dam site elevation. Addition of auxiliary dam spillway on the 3rd auxiliary main overflow dam Released more than 20 years of floods, and also to empty reservoirs .1965 in close cooperation with the design and test personnel, the model test, selected a simplified low-nose energy dissipater program.Experiments show that,