Experimental study on wave dissipation characteristics of concave submerged breakwater
LI Songyao
ZHENG Jianguo
TAO Wei
XU Guohui
Abstract：The submerged breakwater is mainly used for coastal protection due to its function of elimina-ting waves,so that the beach from the submerged embankment to the shoreline is subject to less wave impact.The traditional submerged breakwater is mainly composed of trapezoidal or vertical wall sec-tions.The movement of the wave particles hits the embankment which breaks the waves.However,it faces the problem of erosion and damage due to the strong action of the water in front of the embank-ment on the foundation and the embankment.If the cross section of the submerged breakwater is de-signed as a concave curved surface,the water quality points of the waves will come along the curved surface of the breakwater to impact the upper water body to achieve the function of wave attenuation,and at the same time,the impact on the foundation and the breakwater will be reduced,so that the cross section size of the submerged breakwater will be reduced and the safety will be ensured.In order to explore the wave dissipation performance of the concave curved submerged embankment and the rec-tangular vertical submerged embankment under different wave heights and water depths,an indoor model test was carried out in a wave tank.The results showed that:the shape of the headwind surface had a significant influence on the wave elimination effect of the submerged embankment.The influence of wave height and water depth factors was smaller than that of rectangular vertical embankment.
Keywords：flume testconcave curved submerged breakwatercoastal protectiondissipation coeffi-cientwave elimination
Publication Date：2025-08-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 18-25 )