下卧式闸门消能防冲水力学问题研究

Hydraulic Issues of Energy Dissipation and Erosion Control for Horizontal Gate

苏州河河口水闸采用水下卧倒门,运行时门顶溢流。闸门门顶溢流是典型的湍流流动问题,局部流速大,且流态复杂,对河床的冲刷能力大。采用解析计算、数值模拟与物理模型试验相对照的方法。对苏州河河口水闸的消能防冲水动力学问题进行专题研究,揭示不同工况下水闸运行对上下游河床的冲刷及工程区的局部流动规律,研究最大流速及其出现位置,确定消能防冲的保护范围,进而为水闸工程设计及工程方案优化提供科学依据。

Horizontal gate is used for Suzhou Creek Sluice. The water falls down from the top of gate on the operation, and it＇s a typical overfall problem, The local velocity of the overfall is too strong to scour the river bed. The special study of hydraulic issues of energy dissipation and erosion control for horizontal gate of suzhou creek sluice is put up by analytical calculation, numerical simulation and physical experiment. The flow and scour rule of the overfall under the different condition is opened out, the maximum velocity and its location and energy dissipation and erosion prevention area are presented in the paper, Based of them, the optimal scheme is put forward at last.