不同入水仰角对底流跌坎型消力池水力特性影响试验研究  

Test study of the influence of intake angle on hydraulic characteristics of the lip energy dissipater of hydraulic jump

作　　者：袁晓龙[1] 刁明军[1] 代尚逸[1] 薛宏程[1] 

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

出　　处：《西南民族大学学报（自然科学版）》2013年第3期396-400,共5页Journal of Southwest Minzu University(Natural Science Edition)

摘　　要：采用水工模型试验对跌坎型底流消力池这一较新型的底流消能方案进行研究.重点研究反弧段不同的入水仰角角度,对跌坎消力池内的水流特性及消能效果的影响.研究表明与跌坎相接的反弧段仰角为5°～10°时,可以使消力池内水流更快趋于平稳,降低临底流速,并减小底板所受冲击压力和防冲保护难度.论文研究成果对如何确定跌坎消力池反弧段挑角角度具有工程意义.The hydraulic test is used to study and analyse the energy dissipater with step-down floor which is a new type of conventional lip energy dissipater. The paper adopts model test method and shows that different elevation angles of flip bucket greatly affect the hydraulic index in the baffle basin. Compared with conventional energy dissipaters of hydraulic jump, the new models whose elevation angles range from 5°- 10° decrease the maximum underflow speed, reduce the pulsating pressure acting on the floor and reduce the difficulty of baffle basin protection. Therefbre, how to ascertain the elevation angle of lip energy dissipater with step-down floor is significantly important.

关 键 词：底流消能 入池角度 跌坎 模型试验 

分 类 号：TV653.1[水利工程—水利水电工程]