自从1954年葡萄牙的卡勃利尔(Cabril)坝泄洪洞首次采用窄缝式消能工以来,西班牙、伊朗、法国等也有工程采用了这种形式的消能工,但很少见到这方面的研究资料。1975年将窄缝挑坎引入我国。最近几年才引起了人们的重视,并取得了一些初步成果,龙羊峡、东江水电站的溢洪道上将准备采用窄缝挑坎。 本文仅就窄缝式消能工的流态特征及冲刷特性作一些初步的探讨。 This type of energy dissipater has also been used in Spain, Iran and France since the first use of narrow-gap energy dissipators in the flood hole of the Cabril dam in Portugal in 1954, but seldom occurs in this area Research data. In 1975 will be narrow slit Tucker into our country. In recent years it has aroused people’s attention and achieved some initial results, Longyangxia, Dongjiang Hydropower Station spillway will be prepared to use narrow-gap pick ridge. In this paper, some preliminary discussions are made on the flow characteristics and erosion characteristics of slotted energy dissipater.