Abstract
The gently sloping revetment is stable when the toe of the revetment is buried beneath the sandy beach. However, when the toe of the revetment is exposed to waves as a result of beach erosion, fill material under the revetment is drawn out through the gap between the toe and sandy beach, resulting in the damage of the entire gently sloping revetment. Furthermore, when the toe of the revetment is exposed to waves, the revetment tends to be slippery because of the attachment of marine organisms, causing the increase in danger of the falling. In this study, the recovery method of sandy beach in front of the gently sloping revetment using gravel nourishment is discussed as a measure to improve the waterfront function, taking Kemigawa Beach in Tokyo Bay as an example. Numerical simulations were carried out using the BG model.
