DAMAGE PREDICTION OF RIVER EMBANKMENT AND SIMULATION OF FLOOD INUNDATION DURING LARGE SCALE EARTHQUAKE IN THE FUKUI PLAIN

Abstract

 In this study, we predicted river embankment damage due to liquefaction on the Kuzuryu River and Hino River, based on the assumed results of a large scale earthquake caused by the eastern margin active fault zone of the Fukui Plain. In addition, the impact of the river embankment damage on flood inundation was investigated. As a result of calculating the amount of embankment subsidence at boring points around the river embankment, the maximum amount of subsidence was 3.68 m. Furthermore, we conducted a flood analysis before and after the embankment subsidence, and compared the differences in the time series changes in the inundation area and inundation depth.