Effect of Primary Slope of Structure on the Amount of Waves overtopping from the Reshaping Rubble-Mound Seawalls

Over the present experimental research, a comprehensive study has been carried out to investigate the effect of the structure's primary slope on the amount of overtopping the irregular waves of the sea from the reshaping rubble-mound seawalls. The experiments of physical modeling of this research have been done in the flume of the Soil Conservation and Watershed Management Research Institute (SCWMRI). The waves applied to the structure model are irregular and the energy spectrum of the applied waves is JONSWAP. To study the slope effect of seawalls, the structure slopes of 1:2.5, 1:2 and 1:1.25 have been tested. The material of armor layer have been regarded with the scale of 1:20 model and grading class of D85/D15=1.82. A number of 1000 waves were applied on the structure over the research in general and some 57 experiments have been totally accomplished. The achieved outcomes of the experiments after drawing the figures were analyzed and the effect of the structure's primary slope on the amount of waves overtopping were investigated. The outcomes indicate that the primary slope enjoys no considerable effect on the amount of overtopping from the reshaping rubble-mound seawalls, although following the fall of the structure's primary slope, the mean overtopping discharge faces with a least decrease.