緩傾斜堤周辺の3次元海浜変形予測

抄録

A model for predicting three-dimensional beach changes around a gently sloping revetment was developed using the contour line change model. Wave sheltering effect of the revetment itself at downcoast corner was taken into account to predict a concave shoreline at the corner. The effect obstructing longshore sand transport due to a gently sloping revetment can be quantitatively predicted by the model. Results of the prediction were compared with a movable bed experiment. Both agreed well, and it was confirmed that this model becomes a useful tool to predict three-dimensional beach changes around a gently sloping revetment.