中文摘要：

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。

英文摘要：

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.