超标准潮波作用下越浪量及越浪流特性研究

Characteristics of overtopping rate and overtopping flow under the effect of superstandard tide and wave

为探求台风等引起的超标准风暴潮过境时海堤的破坏机理,通过物理模型试验对超标准水动力条件下带胸墙斜坡堤的越浪量及越浪流特性进行了研究。基于规则波的试验数据,建立了相对堤顶超高、相对墙顶超高以及相对胸墙高度与越浪量之间的经验关系公式。同时提出了在研究堤顶前端水舌厚度与越浪量关系时应采用的无因次参数形式以及在研究越浪流堤顶沿程变化时应采用的相对位置参数。

In order to study the destructive mechanism of superstandard storm surge caused by typhoon,we studied the overtopping rate and overtopping flow of the sloped seadike with parapet under superstandard tide and wave through physical experiments.The empirical formulas between the relative crest ultra-height,relative wall-top ultra-height,relative parapet height and the overtopping rate were established based on experimental data of regular waves.In addition,the appropriate dimensionless parameter was proposed for the research on the relation between overtopping flow thickness and overtopping rate.The proper relative position parameter was also defined to study the overtopping flow thickness on the dike crest.