STABLITY OF TEMPORARILY PLACED LARGE SANDBAGS AGAINST WAVES

In Japan, Typhoon No. 15 (Faxai) hit the Kanto region on September 5, 2019, causing massive flooding damage due to collapse of seawalls (Suzuki et al., 2020). Fukuura district Yokohama City, parapet seawall collapsed and large overtopping waves inundated an area 0.75 km inland from seawall, resulting in a flooded 0.8 km2. Since typhoon season lasts until November, there was possibility that typhoons would continue after that. Therefore, with collapsed, major again. Under such conditions, temporary measures were necessary. sandbags are commonly installed cases. However, many unknowns regarding stability against waves. Even if they installed, likely be scattered by this study, emergency recovery subsequent responses 19 examined. Furthermore, examined through hydraulic experiments.