STABILITY OF BREAKWATERS CONSTRUCTED ON DREDGED SAND MOUND

Abstract

The possibility for the construction of "sand mound breakwater", which is a caisson type breakwater on a artificial sand mound, has been studied. First the wave force characteristics acting on the composite sand mound breakwater model are described, to identify the conditions where impulsive breaking wave pressures are generated. Second, the scouring of the toes of rubble mounds is discussed. Finally there is an outline of field experiments, scouring of sand mounds, and the status of the deposits. The results of experiments provide useful information for the design of breakwater constructed on the artificial sand mound or on a similar double-sectioned sea bottom.