Multi-layer And Multi-row Embedded Ball Box Through-empty Block Wave-eliminating Performance Experimental Research

On a global scale,the coasts and beaches of many countries and regions are suffering from erosion and destruction,and China is also the hardest hit by coastal erosion.In the past,the traditional form of revetment(such as spur dike,slope revetment,offshore embankment,etc.)was not necessary to fully meet the actual engineering needs due to its fixed form,expensive construction,long construction period and a large amount of manpower and material resources.New bank protection structure.The multi-layer multi-row embedded ball box through-empty block structure proposed in this paper is simple in form,low in cost and convenient in construction.It not only retains the wave-eliminating function of the traditional bank protection form,but also functions as an artificial reef,as a shellfish reproduction.The habitat is a place that brings certain economic benefits.Based on the physical model test,this paper studies the wave-eliminating performance of multi-layer multi-row embedded ball box through-space block wave-eliminating structure,in different periods,wave steepness,relative dive depth,model unit row number,model layer number,model under the condition of arrangement and other conditions,the variation law of the transmission coefficient of the multi-layer multi-row embedded ball box through-space block wave-eliminating structure is explored,and then the wave-breaking performance of the structure is analyzed.The experimental results show that the transmission coefficient of the model becomes larger with the gradual increase of the period,and the wave-eliminating effect becomes worse.Under the action of regular waves,the transmission coefficient decreases with the increase of the relative dive depth,and the wave-eliminating effect gradually becomes better.Steepness is not the main reason that affects the transmission coefficient;under the action of irregular waves,the transmission coefficient increases with the relative dive depth,that is,when the model dive depth is q=0,the wave-eliminating effect is the best;the transmission coefficient As the number of rows and the number of layers decreases,the wave-eliminating effect gradually becomes better;whether it is under the action of regular waves or irregular waves,compared with other arrangements,especially the layout of the model is When four rows of single layers are used,the wave elimination effect is the best.Through experiments,it is found that the wave-eliminating structure has certain practicability and has reference value for the practical application of the revetment project in the future.