Waterlogging Risk Assessment and Analysis of Urban Drainage System Based on Rainfall Scenario Simulation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
11
Page:
112-116
Column:
Date of publication:
2020-06-05
- Keywords:
- font-size: 10pt; ">urban drainage system; rainfall scenario simulation; waterlogging risk assessment; GIS system; plain river network city
- Abstract:
-
At present, problems of low design standard and low source control capacity exist in storm pipe network in most urban built- up areas, which increases the risk of waterlogging. Taking a plain river network city for eample, the geographic information system (GIS) technology combined with integrated catchment drainage system model InfoWorks ICM were applied to simulate scenarios at different rainfall return periods,the urban waterlogging risk was analyzed and assessed, and water balance analysis was carried out on the simulation results. It was concluded that measures should be taken to prevent the occurrence of waterlogging and reduce the risk of waterlogging by adding LID facilities at the source, upgrading pipelines, and reasonably arranging peripheral drainage facilities.
Last Update:
2020-06-01