与X型宽尾墩联合的台阶溢洪道消能特性研究  

Study on Energy Dissipation Characteristics of Stepped Spillway Combined with X-shaped Wide Tail Pier

作　　者：杨钊 杨川[1] 张鑫华[1] YANG Zhao;YANG Chuan;ZHANG Xin-hua(Yangling Vocational&Technical College,Yangling 712100,China)

机构地区：[1]杨凌职业技术学院,杨凌712100

出　　处：《价值工程》2024年第28期113-116,共4页Value Engineering

基　　金：杨凌职业技术学院2021年科技创新项目“与X型宽尾墩联合的台阶溢洪道消能问题研究”研究成果,课题编号:ZK21—14。

摘　　要：通过数值模拟对与X型宽尾墩联合的台阶溢洪道水流水力特性进行了研究,并结合不同工况下的水流流态、流速分布等水力要素,对溢洪道水流消能特性进行了探究。结果表明:单宽流量较小时,消能率与传统台阶溢洪道一致,可达60%至70%。当单宽流量较大时,挑射水流占下泄水流主体,消能效果不明显,台阶中心线末端消能率不足25%,可能对台阶面造成破坏,宽度范围约为宽尾墩出口宽度的2/3。The hydraulic characteristics of stepped spillway combined with X-shaped wide tail pier were studied through numerical simulation,and the energy dissipation characteristics of spillway flow were explored by combining hydraulic factors such as flow state and velocity distribution under different working conditions.The results show that when the single width flow is small,the energy dissipation rate is consistent with that of traditional stepped spillways,reaching 60%to 70%.When the single width flow rate is large,the jet water flow occupies the main body of the discharged water flow,and the energy dissipation effect is not obvious.The energy dissipation rate at the end of the centerline of the step is less than 25%,which may cause damage to the step surface.The width range is about 2/3 of the width of the outlet of the wide tail pier.

关 键 词：X型宽尾墩 台阶溢洪道 数值模拟 消能特性 

分 类 号：TV651.1[水利工程—水利水电工程]