洋河-葡萄岛岸段养滩工程波浪响应特征研究

Wave responses to beach nourishment at coast between Yang River and Putao Island

北戴河新区洋河葡萄岛岸段的养滩工程利用人工岛(葡萄岛)作为岬头,建设了四个水下人工沙坝。该文根据2014年波浪资料提取常浪和强浪波况,用MIKE21 SW模块建立并验证了北戴河海域的波浪模型,模拟计算了这两种波况下工程区域的波浪场对四个人工沙坝的响应状况。计算结果表明:坝前入射波浪越大,沙坝透射系数越小,人工沙坝对强浪的削减作用大于常浪,也就是沙坝对较大波浪具有更显著的消能作用。

Four submerged artificial sand bars were built in the beach nourishment project at coast between the Yang River and an artificial island named Potao Island serving as an artificial headland. Ordinary and strong wave conditions were derived from the wave measurements in 2014. A wave model for Beidaihc coastal water is set up based on MIKE 21 SW module and is validated by measurement data in order to investigate wave responses to sand bars. It is found that sand bars have achieved the purpose of wave dissipation and showed better performance trader strong waves than ordinary ones. This is because the big incident wave causes low transmission coefficient of sand bar, which indicates the effect of wave dissipation is obvious, i.e., sand bars have significant effect on reducing energy of strong waves.