IMPROVEMENT OF THE PLUVIAL INUNDAITON ANALYSIS MODEL IN KASUGAI CITY AND ITS TRIAL UTILIZATION

Abstract

 Recently, inundation damage caused by heavy rain has occurred frequently. Many numerical analysis model on the pluvial inundation were developed. But, observation data used for verification of analysis models are insufficient. In this study, in order to improve the accuracy of numerical analysis, the effects of gutters and attachment sewer pipes were expressed by simple model, and the validity of the analysis model was shown by comparison with observation results. Furthermore, the effect of water level measurement in the sewer system was shown using numerical analysis data. As a result, it is expected that the sewer water level measurement will be used for disaster mitigation measures in places where inundation on the ground appears after the sewer water level rises, and lead time of about 30 minutes was obtained in this study.