Urban Waterlogging Simulation and Emergency Response Capacity Evaluation with Extreme Rainstorms

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Urban Waterlogging Simulation and Emergency Response Capacity Evaluation with Extreme Rainstorms

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[1]ZHANG Jinping,ZHANG Zhaoyang,ZUO Qiting.Urban Waterlogging Simulation and Emergency Response Capacity Evaluation with Extreme Rainstorms[J].Journal of Zhengzhou University (Engineering Science),2023,44(02):30-37.[doi:10.13705/j.issn.1671-6833.2023.02.020]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 02 Page number: 30-37 Column: Public date: 2023-02-27

Title:: Urban Waterlogging Simulation and Emergency Response Capacity Evaluation with Extreme Rainstorms

Author(s):: ZHANG Jinping; ZHANG Zhaoyang; ZUO Qiting; Zhengzhou University School of Water Conservancy and Civil Engineering, Henan Zhengzhou 450001, Zhengzhou University Yellow River Ecological Protection and Regional Institute, Henan Zhengzhou 450001, School of Water Conservancy and Civil Engineering, Zhengzhou University, 450001, Zhengzhou, Henan

Keywords:: extreme rainstorm; urban waterlogging; drainage capacity; reachable area; emergency response time

CLC:: O352； P426. 616

DOI:: 10.13705/j.issn.1671-6833.2023.02.020

Abstract:: In order to explore the impact of extreme rainstorms on urban waterlogging characteristics and emergency response capacity, a urban waterlogging model for a certain area in Jinshui District of Zhengzhou city, was developed based on InfoWorks ICM model, and the drainage capacity and waterlogging characteristics of urban pipe network with extreme rainstorm were analyzed. Application with ArcGIS network analysis module, the emergency reachable range and response time of public security, medical treatment and fire protection departments were evaluated to determine the whole city′s emergency response capacity. The results showed that the drainage capacity in the study area was lower wholly, and the proportion of pipes with drainage capacity less than 3 a was 50. 15%, which were mostly distributed in the middle and south and could not meet the drainage standard of 3 ~ 5 years in important areas. Meanwhile, the inundation area was closely related to the drainage capacity and the underlying characteristics. The accumulated water showed the distribution characteristics of more in the south and less in the north under the larger standard of waterlogging control such as 20 a and 100 a, while more water area appeared in the north and near the river with “7·20” rainstorm. The emergency service department with higher emergency vehicle wading ability owned higher emergency response ability in extreme rainstorm, the fire department had the highest response ability in 100 a and “7·20” rainstorm scenarios, and the reachable area in 10 min accounted for 78% and 36%, respectively. Moreover, the joint multi-department regulation could effectively improve the emergency response capability. For example, compared with the best department( he department with the largest proportion of reachable range with the same time threshold) , the emergency reachable area of joint multi-department regulation increased by 16%, 7%, and 4%, respectively in 5, 10, and 15 min with the 100 year rainstorm.

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Last Update: 2023-02-25