Research On The Wave-eliminating Characteristics Of The Semi-submersible Embedded Spherical Box Permeable Block

Coastal erosion is a global geological hazard for a long time,in recent years,Human activities have contributed to the rise of coastal erosion,and with the development and maturity of Marine engineering theory and technology the wave dissipation structure has been developed from shallow seas and coastal waters to the deep and distant seas.Traditional wave dissipation structures like upright breakwater and slope breakwater can't meet the demand.The hollow wave dissipation structure of a mesi-submersible embedded ball box is a new dissipation structure based on the floating breakwater,not only has the advantage of floating wave structure,but also overcomes the defect of the traditional floating breakwater that damages the landscape.In this paper,a physical mode is used to study the wave dissipation performance of a semi-submersible embedded ball box,with wave height,period,row spacing,row arrangement mode,depth of diving as change factor the variation of transmission coefficient under the influence of regular wave,J spectral wave and normalized spectral wave is discussed.The experimental results show that the period,depth and spacing have great influence on the transmission coefficient.The greater the period,the greater the transmission coefficient;As the depth of submergence increases,the effect of the wave dissipation increases first and then decreases;With the increase of row spacing,transmission coefficient increase with the decrease of the first.Through the experiment,the permeability of a semi-submersible embedded ball box with a block dissipation structure has a good wave dissipation performance.