DISCUSSION ON EFFECTS OF FLOOD FLOW IN LOWLAND CITY AT ALLUVIAL PLAIN ON URBAN UTILITY GAS SYSTEM WITH REFERENCES TO INUNDATION PROCESSES AND DRAG FORCE DISTRIBUTIONS

Abstract

 The present study discuss the effects of flood flow on the urban utility gas system in lowland city area located in alluvial plain. We conduct to simulate flood flow behavior with the iRIC Nays 2D Flood model for evaluating the inundation processes and spatiotemporal drag force distributions, quantitatively in the floodplain of the Shinkawa River, Aichi prefecture.

 By checking the relationship between the locations of governor of urban gas system in inundation area and these spatiotemporal hydraulic distributions, we could suggest the effects of catastrophic flood hazards, sufficiently.