斜坡堤坡肩及平台护面类型对越浪量的影响

海堤护面设计中，在满足稳定的基础上，还希望通过采用适当的护面形式来减小越浪量，以减少工程造价。现有越浪量计算方法大多引入护面糙渗系数以体现护面形式对越浪的影响，然而海堤不同位置的护面形式对越浪量的影响不尽相同，因此，通过物理模型试验，研究不规则波作用下平台和坡肩护面类型对越浪量的影响，当采用不同护面类型以减小波浪越浪量时，不仅需要比选不同护面类型的糙渗性，同时还需关注护面块体摆放的位置，设置在波浪上爬区时效果更好，可为海堤设计提供借鉴。

Influence of shoulder and flat protection on overtopping for sloping breakwater

In the design of breakwaters, on the basis of guaranteeing the stability, optimum types of protection are chosen to reduce the overtopping and thus decrease the construction cost. The roughness and permeability coefficients are introduced in most recent calculations of overtopping, illustrating the effect of protection on the overtopping rate. However, this influence can be variable according to different locations for the protection types.Therefore a modeling experiment is conducted in present study to investigate the effect of flat and shoulder types on the rate of overtopping under irregular wave conditions.When different protections are used to reduce the overtopping, not only the roughness and permeability, but also the positions of the protection should be considered.The effect will be better when the protection is putted in the swash area, which can be a reference for the design of breakwaters.