Study on Maintenance of Non-Wave Overtopping Performance of Flaring Shaped Seawall against Sea Level Rise

Hydraulic performances of a non-wave overtopping type seawall were investigated on a supposition of the sea level rise that might occur near future. Two-dimensional hydraulic experiments were carried out under some different water level conditions, which reproducing the sea level rise, to clear the effect of the sea level rise on the hydraulic performances of the non-wave overtopping type seawall. Furthermore, this study proposes an appropriate countermeasure against the sea level rise to maintain an excellent checking effect of the wave overtopping of the seawall. Both the efficiencies of the proposed countermeasure and characteristics of the maximum wave pressure acting on it were evaluated through hydraulic experiments.