街道及下水道之雙排水系統快速淹水模擬
Journal
農業工程學報
Journal Volume
65
Journal Issue
1
Pages
1月17日
Date Issued
2019
Author(s)
Abstract
In recent years, flooding in urban areas have been occurring more frequently due to the increasing of extreme rainfall events. Therefore, assessment of high inundation potential areas in metropolises becomes very important. This study attempts to develop a street flood inundation model for fast evaluation of street flooding. This model consists of three modules: (1) rainfall-runoff transformation, (2) 1D street flow routing, (3) 1D sewer flow routing. By changing the routing order of these three modules, two different rainfall collection methods including Method A: rainwater into storm sewers first and Method B: rainwater into street first, are proposed to evaluate potential flooding streets right after rainfall events occurred. In this study, Muzha drainage basin in Wenshan District, Taipei, is selected as the study area. Two short duration rainfall events are used for simulation and analysis. Due to the closeness to real rainfall collection phenomena, the simulated results from Method B has a better agreement with the measured data of street inundation areas and sewer water levels than Method A. Thus, we take method B as a representation of street flood inundation model. Compared to 2D flood inundation models, street flood inundation model has a better performance on computation time and may be used to evaluate the flooding disaster immediately. © 2019, Taiwan Agricultural Engineers Society. All rights reserved.
Subjects
Dual drainage system; Fast flood inundation modelling; Storm sewer flow; Street flood inundation model
SDGs
Other Subjects
Catchments; Drainage; Flood control; Rain; Runoff; Storm sewers; Storms; Water levels; Collection methods; Dual drainage; Flood inundation modeling; Flood inundation modelling; Inundation simulations; Rainfall-runoff transformation; Short duration rainfalls; Simulation and analysis; Floods; computer simulation; disaster management; drainage network; flood control; flooding; flow pattern; rainfall-runoff modeling; rainwater; routing; runoff; sewer network; street canyon; China; Taipei; Taiwan; Wenshan; Yunnan
Publisher
社團法人台灣農業工程學會
Type
journal article