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Chinese Journal of Management Science ›› 2025, Vol. 33 ›› Issue (7): 222-231.doi: 10.16381/j.cnki.issn1003-207x.2022.2131

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Identification of Urban Rainstorm Flood Disaster Chain and Assessment of Systematic Risk

Gaofeng Liu1,2, Jiajing Li1,2, Huimin Wang1,3(), Yanbing Gong2, Feifei Tao4   

  1. 1.Institute of Management Science,Hohai University,Nanjing 210098,China
    2.Business School,Hohai University,Nanjing 210098,China
    3.Department of Management and Economics,Tianjin University,Tianjin 300072,China
    4.College of Computer and Software,Hohai University,Nanjing 211100,China
  • Received:2022-09-29 Revised:2024-01-09 Online:2025-07-25 Published:2025-08-06
  • Contact: Huimin Wang E-mail:hmwang@hhu.edu.cn

Abstract:

A series of secondary derivative hazards triggered by urban rainstorms form rainstorm flood chains. The identification of disaster chains and the assessment of disaster chain risk based on disaster system theory are beneficial for enhancing the level of urban public safety emergency response. In contrast to previous research that focused on evaluating the risk of a single flood hazard, the construction of an event-evolutionary graph of rainstorm floods and a model for assessing systemic risk in disaster chains are introduced. A hybrid approach is developed in this study, which integrates disaster chains and complex networks to model and evaluate the systematic risk of urban rainstorms and flood disasters. The text data used in this study are sourced from news articles reporting flooding disasters between 2017 and 2021. The data are first preprocessed in this study, followed by the extraction of disaster event pairs using dependency language analysis and rule templates. Additionally, techniques for event clustering generalization and co-occurrence analysis are employed to create a factual knowledge map of the development of urban storm flooding disasters. Subsequently, risk level indices for flood and rainfall hazard chains are introduced, and a systematic risk assessment model that considers the amplification effect of hazard chain reactions on disaster scenarios is constructed. Cases from typical rainstorm events in Shenzhen, Henan, and Shanxi are selected. By comparing and analyzing the characteristics of disaster evolution, systematic risk response strategies, and management insights in different regions are proposed. The results indicate that (1) Distinct catastrophe events exhibit various characteristics and play roles in the dissemination effect of disaster risk progression, as revealed through the identification of the disaster chain of severe rainfall and flooding. (2) Through the assessment of systemic risk in the process of disaster chain evolution, it is observed that the same disaster event may trigger multiple disaster chains, and the value of risk is closely associated with the geographic environment and socio-economic development of different cities.

Key words: rainstorm flood, disaster chain, event logic graph, co-occurrence analysis, systemic risk

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