Experimental Study On Wave-eliminating Performance Of Double-layer Four-ring Net Structure Under Semi-submersible Conditions

Based on the research on coastal protection,this paper proposes a new semi-submersible double-layer four-ring network structure wave-eliminating model,which conducts physical model test under regular wave and irregular wave,and studies relative width and relative level.The effect of the net spacing,the relative water depth,the relative wave height,the wave steepness,the layout width,the number of rows arranged,the depth of the water inlet,and the vertical clear spacing in the superimposed state on the wave transmission coefficient to determine the wave-eliminating effect of the model structure,The wave transmission coefficient of the double-layer four-ring network structure will decrease with the increase of the relative width,the relative horizontal clearance,and the relative water depth.In the limited water area,the arrangement of the double-layer four-ring network structure is larger.The better the model is when the number of rows is fixed,the model has the best effect of eliminating wave when the width B=2.41m;the depth of the model is the best when the model is 0.02 m below the water surface;The effect of the change of vertical clear spacing on the transmission coefficient during double layer superposition is greatly affected by the wave period,and the wave elimination effect of long-period waves is more significant.Based on the actual needs of the project,this paper proposes a new type of semi-submersible double-layer four-ring net wave-eliminating structure.The structure of the material is cheap and durable,and the production method is simple and fast.It will not have a substantial impact on the coastal landscape and is conducive to protection.Seawater exchange in the sea has a very broad application prospect.