锦屏一级水电站分层取水叠梁门进水口水力特性研究  

Experimental study on hydraulic characteristics of the stratified intake for the first-stage Jinping hydropower station

作　　者：章晋雄[1] 张东[1] 吴一红[1] 张文远[1] 游湘[2] 

机构地区：[1]中国水利水电科学研究院,北京100038 [2]中国水电顾问集团成都勘测设计研究院,成都610072

出　　处：《水力发电学报》2010年第2期1-6,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金资助项目(50539070)

摘　　要：本文结合锦屏一级水电站叠梁门分层取水进水口的布置,通过水工模型试验,对电站进水口的水力特性进行了系统研究。研究结果表明,通过控制门顶水头可避免进口水流产生旋涡等不良流态;进口叠梁门及闸墩段压力呈线性分布,压力脉动较小;进水口叠梁门顶上方底部流速较大,门后竖向流道内流速分布不均匀;进水口设置叠梁门后水头损失明显变大,且水头损失随叠梁门高度成比例增大。研究成果为工程分层取水进水口的设计提供了参考依据和指导。In this paper,hydraulic characteristics of a stratified intake with stop-log gates are studied by scale model tests for the first-stage Jinping hydropower Station. The results show that undesirable flow patterns such as vortex flow can be avoided by controlling the water head over the gate,and show linear pressure profile and low-intensity pressure fluctuations on the gate and pier,larger velocity at the bottom of the gate,and nonuniform velocity distribution in the vertical direction behind the gate. Head loss behind the stop-log gates increases significantly and linearly with the height of gates. These results provide a reference and guide for engineering design of stratified water intake.

关 键 词：水力学 分层取水进水口 水工模型试验 水力特性 

分 类 号：TV131.61[水利工程—水力学及河流动力学]