|Table of Contents|

Evaluation of Drainage System Capacity and Waterlogging Risk in Xianyang City of Shaanxi Province Based on InfoWorks ICM Model(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2020年第04期
Page:
552-559
Research Field:
水资源与环境
Publishing date:

Info

Title:
Evaluation of Drainage System Capacity and Waterlogging Risk in Xianyang City of Shaanxi Province Based on InfoWorks ICM Model
Author(s):
WU Yan-cheng1; 2;  DING Xiang1; 2;  YANG Li-wei2;  ZHANG Qian3
(1. Infrastructure Projects Office, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 3. Tongji Architectural Design(Group)Co., Ltd., Shanghai 200092, China)
Keywords:
drainage system capacity;  waterlogging risk;  InfoWorks ICM model;  coupling model;  flood disaster index;  water depth;  Shaanxi
PACS:
P641.75; TU992
DOI:
10.19814/j.jese.2020.03052
Abstract:
In order to evaluate the drainage system capability and waterlogging risk of the main urban area in Xianyang city, Shaanxi province, one-dimensional and two-dimensional coupled hydrodynamic models of the main urban area were settled based on InfoWorks ICM model to test the current situation of drainage system, and waterlogging risk was evaluated by the flood disaster index assessment indicators of UK. The results show that the main urban area of Xianyang city adopts the flat grate rainwater inlet, and the coverage degree is satisfied with the design requirement, but the problems such as damage, displacement and silting still exist, and some pipes are seriously clogged, resulting in lower compliance rate of pipes; the diameter of current drainage pipe network is small, so that in the simulation of 4 rainfall intensities(design storm frequencies are 0.5, 1, 3 and 5 years), the proportions of pipe networks with drainage capacity of once less than 0.5 year, once 0.5-1.0 years, once 1-3 years, once 3-5 years and once more than 5 years are 68.9%, 5.8%, 3.9%, 5.3% and 16.1%, respectively; the areas surrounded by Renmin road-Dongfeng road-Weihe-Xiantong road and Dongfeng road-Hedi road-Fuyin expressway-Jinxu road in the main urban area of Xianyang city are high waterlogging risk.

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Last Update: 2020-07-27