太山里水库台阶式溢洪道消能规律分析  

Analysis on Energy Dissipation Law of Stepped Spillway in Taishanli Reservoir

作　　者：刘欣 LIU Xin(Chenzhou Water Resources and Hydropower Exploration and Design Institute,Chenzhou 423000,China)

机构地区：[1]郴州市水利水电勘察设计研究院有限公司,湖南郴州423000

出　　处：《河南水利与南水北调》2023年第3期93-94,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：以郴州市北湖区鲁塘镇东南侧太山里村境内的太山里水库为例,基于水库运行实际设计出台阶式溢洪道试验模型,并对不同水力条件下水流流态和消能特性进行了试验模拟。结果表明,过渡水流所产生的较强冲击波对溢洪道台阶受力十分不利,必须加强设计控制,但就水流流态试验过程的完整观察得出,台阶水面流态较为破碎,不同台阶高度下水面也均位于台阶边墙高度内,并无大量飞溅现象;对于小流量而言台阶式溢洪道消能率可达90%以上,消能效果明显,在太山里水库运行中较为适用。Taking the Taishanli Reservoir in Taishanli village,southeast of Lutang Town,Beihu District,Chenzhou City,as an example,a stepped spillway experimental model was designed based on the actual operation of the reservoir,and the flow pattern and energy dissipation characteristics under different hydraulic conditions are simulated.The results show that the strong shock wave produced by the transitional water flow is very disadvantageous to the stress on the spillway steps,and the design control must be strengthened.However,the complete observation of the water flow test process shows that the flow pattern of the stepped water surface is relatively broken,and the water surface under different step heights are also located in the height of the side wall of the step,without large amount of spillway splash.For small flow,the step spillsway can dissipate energy up to 90%or more,with obvious energy dissipation effects,and is suitable for the operation of Taishanli reservoir.

关 键 词：台阶式溢洪道 消能规律 消能率 水流流态 

分 类 号：TV135.2[水利工程—水力学及河流动力学]