The Stability Riprap on Scattered Submerged Breakwater due to Physical Model

*Department of Civil Engineering, Pusan National University, Bu san, KoreaKEY WORDS: Artificial intertidal zone 인공조간대, Scattered riprap submerged breakwater 난적 잠제, Wave breakers type 쇄파형상, Riprap of stability 사석안정, Calculating the weight of riprap 사석중량산정ABSTRACT:This study described the stability of riprap, which was examine d by a two-dimensional physical model of a scattered riprap submarine breakwater. Artificial reef structures made of scatte red riprap are used like artificial intertidal zone structures as waterfront seaside structures. To prevent topography change in such an artificial intertidal zone the energy is reduced at the scattered riprap s ubmarine breakwater by intercepting high waves. The breaking waves are converted into flow on the front surface slope of the submarine breakwater, wh ich follows the upper part of the artificial intertidal zone. Because of this p henomenon of resisting water flow, it is very important to calc ulate the required weight of the riprap to maintain its stability. The results of a physi cal model can be abstracted as shown below. First, distribute the wave breaking types occurring on the front surface slope of the submarine breakwate r and arrange it in relation to the movement of riprap. Second, using the hydraulic phenomenon that occurs at the depth of the scattered riprap sub marine breakwater, propose a calculation formula for the veloci ty distribution showing the influence on the stability of the riprap. Third, pr opose and compare values, which can be obtained by experiments and calculations for riprap stability on the front surface of the artificial interti dal zone. Fourth, calculate the required weight for riprap stab ility.교신저자 박상길: 부산광역시 금정구 장전2동 산30번지, 051-510-2427, sakpark@pusan.ac.kr