To investigate the disaster evolution characteristics and associated risks of heavy rainfall and flooding on urban transportation infrastructure, this study takes the extreme rainstorm event in Zhengzhou as a typical case. A multidimensional dynamic risk assessment model is employed to analyze the disaster evolution process and conduct risk evaluation. First, the three-stage evolution process and its characteristics are systematically examined. Then, based on the theory of natural disaster risk elements, a dynamic risk assessment model is constructed. The improved Order of Priority Approach (OPA) is used to determine the weights of multidimensional risk factors, and interval type-1 fuzzy logic is introduced to address the uncertainty of fuzzy indicators. Finally, the overall risk level of the heavy rainfall–flooding disaster chain is calculated and evaluated. The results indicate a high-risk level, which is consistent with the findings of the field investigation report, thereby validating the feasibility of the proposed disaster chain evaluation method combining multiple models. This analysis provides a theoretical basis for future studies on similar urban storm flood risk scenarios.
The increasing frequency and intensity of urban floods, driven by rapid urbanization and global climate change, underscore the importance of risk assessment in supporting effective disaster mitigation and prevention. A scientific, accurate, and detailed risk assessment for urban floods enables the effective identificat...
To address the uncertainties in emergency shelter siting under compound disaster scenarios, based on the connotative characteristics and formation mechanisms of urban natural hazards, a hazard assessment system for geological and flood disasters was constructed using the Random Forest (RF) algorithm. On this basis, con...
Yan Zhang, Wenjie Zhao, Xian-Gang Luo et al.· Remote Sensing· 0 citations
Urban flood (UF) risk assessment provides a geographical perspective for addressing threats to urban development and public safety. Although the Hazard-Exposure-Vulnerability (H-E-V) framework is widely used, ambiguous boundaries between Exposure and Vulnerability and unreasonable coupled risk-value distributions may w...
Yin-Yin Chen, Gui-Cheng Yang, Xu-Heng Xiong et al.· Water Research· 0 citations
Flooding is one of the most frequent and economically damaging natural disaster in Malaysia. Determining exposed elements vulnerable to flood is essential in flood risk management. This study aims to develop a micro-scale physical flood vulnerability assessment for buildings and roads in Sibu, Sarawak, Malaysia....
M. Ruslan, Muhammad Zulkarnain Abdul Rahman, M. F. Abdul Khanan et al.· International Journal of Dis...· 0 citations
The Anhui reach of the Huaihe River Basin features low-lying terrain, dense river networks, and high flood risk spatial heterogeneity, restricting regional socio-ecological sustainability. Traditional flood risk assessments suffer from incomplete indicators, subjective grading, and one-sided outputs when adopting singl...
He Li, Chao-Jie Zheng, Yao Zhang et al.· Sustainability· 0 citations
Urban systems are increasingly vulnerable to extreme rainfall under climate change, where flooding often triggers cascading disruptions to critical infrastructure. While traditional frameworks focus on natural attributes or isolated socioeconomic exposure, they frequently overlook the decisive role of urban lifeline...
