挑流消能在狭窄泥岩河谷中的应用  

Application of Flip Bucket Energy Dissipation in Narrow Mudstone River Valley

作　　者：李金键 代翔 邹君韬 马旭东[1,2] 杨庆[1,2] LI Jinjian;DAI Xiang;ZOU Jun-tao;MA Xudong;YANG Qing(State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China;College of Water Resource&.Hydropower,Sichuan University,Chengdu 610065,China;Hydropower Investigation and Design Institute,Mengzi 661100,China)

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [2]四川大学水利水电学院,四川成都610065 [3]云南省红河州水利水电勘察设计院,云南蒙自661100

出　　处：《水电能源科学》2022年第11期120-123,共4页Water Resources and Power

基　　金：国家重点研发计划(2016YFC0401901)。

摘　　要：在下游河道狭窄、泥岩抗冲流速小等不利地质地形条件下,依托实际工程,采用模型试验方法研究了有、无水垫塘条件下不同的泄洪洞挑坎体型,并比较了挑流水舌的空中形态、河床冲刷位置及深度、水垫塘中水流流态、底板冲击动压及水垫塘消能率等特征水力指标。结果表明,在基岩抗冲流速小、单宽流量大、天然水深较浅的河谷中,采用燕尾坎+水垫塘的组合消能工方案是可行的,为挑流消能在低抗冲流速基岩中的应用提供了新途径。Under the unfavorable geological and topographical conditions such as the narrow downstream river channel and the mudstone foundation with low resisting flow velocity, based on the practice engineering, the hydraulic indicators under the condition of with or without a plunge pool was compared via scale model test. Such hydraulic indicators include flow pattern, depth and location of scour, flow regime, impact pressure, and energy dissipation efficiency in plunge pool. The results show that it is feasible to combine swallow-tailed flip bucket and plunge pool to dissipate energy under the above unfavorable conditions, which provides a new way for application of flip bucket energy dissipation in mudstone foundation with low resisting flow velocity.

关 键 词：泄洪洞 水垫塘 燕尾型挑坎 泥岩地基 

分 类 号：TV651.1[水利工程—水利水电工程]