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以不可渗透光滑潜堤为研究对象,基于波浪水槽试验,分析了规则波和不规则波通过淹没梯形潜堤时的波浪外部形态变化以及内部能量变化规律。探讨了不同波浪要素(周期、波高、淹没水深)对潜堤附近波高影响的变化规律。同时,探究了潜堤斜坡坡度、堤顶淹没水深对波浪频谱在频域分布的影响。研究结果表明:当波浪通过潜堤时,波浪主频能量衰减,波浪能量由低频向高频移动;潜堤斜坡坡度越大、堤顶水深越小,波浪主频能量衰减越剧烈;波浪通过潜堤后高频波能量占潜堤次生波能量的1%~30%。
Taking the impermeable smooth submerged embankment as the research object, based on the wave tank experiment, the external shape change and internal energy variation of the wave when the regular wave and the irregular wave submerged the trapezoidal submarine embankment were analyzed. The influence of different wave elements (period, wave height, submerged depth) on wave height near submerged embankment is discussed. At the same time, the influence of the slope of the submarine slope and the submerged depth of the dike on the frequency spectrum of the wave spectrum was investigated. The results show that when the wave passes the submerged embankment, the energy of the wave decays and the energy of the wave moves from low frequency to high frequency. The larger the slope of the submerged bank, the smaller the water depth of the embankment, the fiercer the attenuation of the main frequency energy of the wave. High-frequency wave energy after dike accounting for 1% to 30% of secondary wave energy.