Scenario Simulation-Based Assessment of Trip Difficulty for Urban Residents under Rainstorm Waterlogging

Peng Chen, Jiquan Zhang, Xinyu Jiang, Xingpeng Liu, Yulong Bao and Yingyue Sun
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Peng Chen: College of Urban and Environmental Sciences, Natural Disaster Research Institute, Northeast Normal University, Changchun, Jilin 130024, China
Jiquan Zhang: College of Urban and Environmental Sciences, Natural Disaster Research Institute, Northeast Normal University, Changchun, Jilin 130024, China
Xinyu Jiang: Disaster Prevention Research Institute, Kyoto University, Uji 611-0011, Japan
Xingpeng Liu: College of Urban and Environmental Sciences, Natural Disaster Research Institute, Northeast Normal University, Changchun, Jilin 130024, China
Yulong Bao: College of Urban and Environmental Sciences, Natural Disaster Research Institute, Northeast Normal University, Changchun, Jilin 130024, China
Yingyue Sun: School of Travel and Geographical Sciences, Jilin Normal University, Siping, Jilin 136000, China

IJERPH, 2012, vol. 9, issue 6, 1-18

Abstract: In this study, an experiment was performed to assess the trip difficulty for urban residents of different age groups walk ing in various depths of water, and the data were corroborated with the real urban rainstorm waterlogging scenarios in downtown (Daoli district) Ha-Erbin (China). Mathematical models of urban rainstorm waterlogging were constructed using scenario simulation methods, aided by the GIS spatial analysis technology and hydrodynamic analysis of the waterway systems in the study area. Then these models were used to evaluate the impact of waterlogging on the safety of residents walking in the affected area. Results are summarized as: (1) for an urban rainstorm waterlogging scenario reoccurring once every 10 years, three grid regions would have waterlogging above 0.5 m moving at a velocity of 1.5 m/s. Under this scenario, waterlogging would accumulate on traffic roads only in small areas, affecting the safety and mobility of residents walking in the neighborhood; (2) for an urban rainstorm waterlogging scenario reoccurring once every 20 years , 13 grids experienced the same waterlogging situation affecting a larger area of the city; (3) for an urban rainstorm waterlogging scenario reoccurring once every 50 years, 86 grid regions were affected ( waterlogging above 0.5 m moving at 1.5 m/s), and those areas would become impassable for residents.

Keywords: scenario simulation; urban rainstorm waterlogging; GIS; trip difficulty; Ha-Erbin City (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2012
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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