滨海水闸闸下冲刷成因及布置优化分析——以瓯飞东2号闸为例

An Analysis of the Causes of Scour and Layout Optimization Under the Coastal Sluice with the East Gate 2 of Oufei Reclamation Project as an Example

滨海地区水闸基础软弱,抗冲能力较差,闸下水位亦随潮汐涨落频繁,对水闸的防冲安全及运行维护带来巨大压力。以瓯飞一期围垦工程东2号闸为例,采用物理模型试验,对闸下控制潮位、消能工布置、海漫布置及冲刷时间等主要影响参数开展分析,初步揭示了闸下冲刷的成因及特点。并以此为基础,提出了改善方向及优化方案,消除了传统布置中存在的盘头冲刷问题,成果可为类似工程参考。

The foundation of coastal sluice is weak,the anti-punching ability is poor,and the water level under the sluice also fluctuates frequently with the tides,which brings a great pressure on the safety and operation maintenance of the sluice. Based on the east gate 2 of Oufei reclamation project as an example,a physical model is used to test the design tidal level below the sluice,energy dissipation design,the apron layout and flushing time to carry out an analysis of the main influence parameters and reveal the causes and characteristics of the scour. And on that basis,this paper puts forward the improvement direction and optimization solutions,eliminates the up-do scour problems existing in traditional arrangement. Its research results serve as a reference for similar projects.