DOI: 10.1007/s11069-021-04960-x
论文题名: A coupled high-resolution hydrodynamic and cellular automata-based evacuation route planning model for pedestrians in flooding scenarios
作者: Li B. ; Hou J. ; Ma Y. ; Bai G. ; Wang T. ; Xu G. ; Wu B. ; Jiao Y.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
语种: 英语
中文关键词: 2D hydrodynamic model
; Cellular automata
; Flood hazard assessment
; Morpeth flood simulation
; Shortest route planning algorithm
英文摘要: Flooding is now becoming one of the most frequent and widely distributed natural hazards, with significant losses to human lives and property around the world. Evacuation of pedestrians during flooding events is a crucial factor in flood risk management, in addition to saving people’s lives and increasing time for rescue. The key objective of this work is to propose a shortest evacuation path planning algorithm by considering the evacuable areas and human instability during floods. A shortest route optimization algorithm based on cellular automata is established while using diagonal distance calculation methods in heuristic search algorithms. The Morpeth flood event that occurred in 2008 in the UK is used as a case study, and a highly accurate and efficient 2D hydrodynamic model is adopted to discuss the flood characteristics in flood plains. Two flood hazard assessment approaches [i.e., empirical and mechanics-based and experimental calibrated (M&E)] are chosen to study human instability. A comprehensive analysis shows that extreme events are better identified with mechanics-based and experimental calibration methods than with an empirical method. The result of M&E is used as the initial condition for the Morpeth evacuation scenario. Evacuation path planning in Morpeth shows that this algorithm can realize shortest route planning with multiple starting points and ending points at the microscale. These findings are of significance for flood risk management and emergency evacuation research. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169156
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an University of Technology, No. 5 Jinhua Road, Xi’an, 710048, China; Hanjiang-To-Weihe River Valley Water Diversion Project Construction Co., Ltd., Xi’an, Shaanxi 710010, China; Power China Road Bridge Group Co., LTD, Beijing, 100089, China
Recommended Citation:
Li B.,Hou J.,Ma Y.,et al. A coupled high-resolution hydrodynamic and cellular automata-based evacuation route planning model for pedestrians in flooding scenarios[J]. Natural Hazards,2021-01-01