STUDY ON FLOODING AND VEHICLE STABILITY AT CAR ACCIDENT DUE TO HORIZONALLY 2-D FLOOD SIMULATION

Abstract

 This study aims to clarify the flood inundation conditions and vehicle loss at the Hatagawa Riner basin, where vehicle death occurred by typhoon Hagibis in 2019. In this study, we conducted 1D flow and 2D flood simulations in the Hatagawa River basin. The result indicated that a rapid increase in flow velocity and water depth were found at the disaster point of death in the vehicle. The simulated time when the vehicle was outflowed was almost comparable to the actual time. It is found that the area for vehicle outflow were locally limited and were in agreement with the inundation depth distribution affected by the topography of alluvial fans and railway embankments.