潜堤掩护水域波浪计算方法

采用波浪断面物理模型试验和数学模型耦合的方法,研究了抛石潜堤后方掩护水域的波浪计算方法。潜堤后方掩护水域波高由潜堤越浪后的再生波、潜堤间口门绕射波和小风区浪组成,其主要影响因素有潜堤结构形式、入射波浪要素、风区长度等。采用耦合模型,根据物理模型试验的结果,验证数模计算成果,考虑了越浪波高传递的沿程衰减,波浪相互作用时的能量损耗等因素,通过调整波浪破碎指标和波浪能量耗散参数,直接计算堤前设计波浪要素,计算结果更符合实际,为工程设计提供科学依据。

Wave calculation method for water area sheltered by submerged dike

Adopting wave sectional physical model test and numeral model test coupling,we study the wave calculation method for the water area sheltered by the riprap submerged dike.The wave height of the water area sheltered by the submerged dike consists of the regeneration wave,diffracted wave from the entrance between submerged dikes and the wind wave of small fetch.The main factors are the structure of dike,wave feature and the length of the fetch.The calculation results of the numeral model are verified using the coupling model and according to the results of physical model test.Considering the overtopping wave height along the transmission attenuation,the energy consumption during the interaction of wave and structure,etc.,we calculate directly the design wave in front of the dike by adjusting the wave breaking index and parameters of wave energy dissipation.The results of the study are more realistic and thus provide a scientific basis for the engineering design.