Study on the Beach Protection with the Tetrahedron Like Penetrating Frame Groups

The triangular taper penetrating frame is always used at the flood and bank protection. It is given that the tendency of longitudinal and lateral water surface profile and change of velocity near the triangular taper penetrating frame by the flume generalized model experiment and compared with the flow structure near the triangular taper penetrating frame with beach protection construction or not. It points out the triangular taper penetrating frame can protect the beach better.