Urban Waterlogging Disaster Risk Evaluation Framework Based on Complex Network and Agent-Based Model: A Case Study of Zhengzhou, China

Published: Jan. 1, 2025

Language: Английский

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A hybrid surrogate model for real-time coastal urban flood prediction: An application to Macao

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 642, P. 131863 - 131863

Published: Aug. 19, 2024

Language: Английский

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Integrating river channel flood diversion strategies into dynamic urban flood risk assessment and multi-objective optimization of emergency shelters

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

With the continuous advancement of urbanization, risk urban flooding is increasing, making establishment emergency shelters crucial for mitigating flood disasters. This study uses Jinshui River diversion pipeline project in Zhengzhou as a case to systematically investigate effect measures on reducing risks and optimize site selection based assessments. First, InfoWorks integrated catchment management model used simulate under different rainfall scenarios. Second, integrating multi-source data, technique order preference by similarity an ideal solution with four weighting methods applied identify high-risk areas. Finally, results assessment are weights multi-objective model, which solved particle swarm optimization algorithm determine optimal shelter locations. The show that: (1) In 10, 50, 200-years scenarios, significantly reduce depth inundated areas; however, limited extreme “7·20” event. (2) High-risk areas primarily concentrated highly urbanized northeast, although alleviates risk, overall remains high events. (3) Under scenario after diversion, 13 locations identified, average evacuation distance 471.9 meters, covering 97.3% population area. These findings provide scientific evidence management.

Language: Английский

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Risk Assessment of Flood Disaster in Cities Based on “Disaster-Pregnant, Disaster-Causing, Disaster-Forming and Disaster-Curing”

Water Resources Management, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

Language: Английский

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Spatiotemporal Urban Waterlogging Risk Assessment Incorporating Human and Vehicle Distribution

Water, Journal Year: 2023, Volume and Issue: 15(19), P. 3452 - 3452

Published: Sept. 30, 2023

Due to the increase in frequency and severity, assessing predicting urban waterlogging risk is critical. The assessment framework based on three factors: hazard, exposure, vulnerability. indicators, previously solely static account for effects of varying temporal spatial distributions people vehicles results. Specifically, two dynamic indicators—the population density Traffic Performance Index (TPI)—are added mix dynamically assess central area Suqian City Jiangsu Province, China’s area, over various periods. findings indicate that four–six times more individuals are affected during peak hours than other periods, no important roads within scope while nearly ten will be hours. Additionally, characteristics distribution can accurately represented by a combination indicators. highest areas significantly prominent weekday period times; morning mainly traffic performance evening density, main factors affecting periods same as period. located eastern part City, with lowest north south.

Language: Английский

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Identification of Waterlogging-Prone Areas in Nanning from the Perspective of Urban Expansion

Sustainability, Journal Year: 2023, Volume and Issue: 15(20), P. 15095 - 15095

Published: Oct. 20, 2023

The objective of this study was to discern the spatial and temporal patterns areas in Nanning that are susceptible waterlogging, particularly during various phases urban expansion. Furthermore, presents a proposal outlining strategies aimed at preventing controlling waterlogging. These based on integration concepts sponge city resilient construction. This employed remote sensing (RS) geographic information system (GIS) techniques provide technical support. supervised classification method normalized difference index were utilized compare extract impervious surfaces from 2013 2020. present investigation acquired compute fractal dimension as weighting factor, incorporating digital elevation model (DEM) for purpose conducting hydrological analysis ArcGIS. Based findings study, several conclusions can be derived. following drawn study: (1) varied over period, with values 1.32, 1.41, 1.58 2013, 2017, 2020, respectively. distribution showed decreasing trend center periphery. Urban planning construction activities have significantly influenced surfaces, resulting progressively more complex unstable structure. (2) From expansion increased 1.32 1.58, indicating decrease stability surfaces. higher concentrations coincided frequent waterlogging-prone areas. points transformed concentrated pattern scattered one. (3) In terms waterlogging prevention control strategies, old recommended into projects, new development planned, designed implemented concept “resilience”.

Language: Английский

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Construction And Application Of Evaluation Index System For Pharmaceutical Supply Chain Resilience: A Delphi Study

Journal of Namibian Studies History Politics Culture, Journal Year: 2023, Volume and Issue: 33

Published: May 21, 2023

The present study outlines a methodical methodology for developing an assessment index framework aimed at enhancing the resilience of pharmaceutical supply chain. A preliminary version evaluation system was established through comprehensive review literature and panel discussions. Two rounds expert consultation were conducted using Delphi method to finalize indicators their corresponding weights. criteria chain comprises ten primary sixty-two secondary indicators. These encompass various facets such as ability design chain, reserve resources, integrate processes, collaborate effectively, adopt eco-friendly practices, visualize data, foster culture learning. outcomes with experts reveal that is reliable, it demonstrates significant level attention, coordination, authority among experts. determination weight each indicator in based on relative significance factors augmenting development offers systematic approach evaluate enhance chains, thereby providing valuable scientific instrument. results this hold potential value entities within industry, companies, policymakers, other stakeholders. Specifically, these findings may aid identification resolution weaknesses enhancement management fortification against external disruptions. Prospective investigations center implementation practical scenarios, scrutinizing its soundness dependability, investigating methods consistently robustness chains.

Language: Английский

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Research on Risk Assessment of Rainstorm and Flood Disaster in Cities Based on "Disaster-Pregnant, Disaster-Causing, Disaster-Forming and Disaster-Curing"

Published: Jan. 1, 2023

The risk assessment of urban flood disasters (UFRA) is an effective way to prevent disasters, which plays important role in management. Urban floods have occurred frequently recent years, it great necessary carry out research on UFRA. With considering four main factors: disaster-pregnant, disaster-causing, disaster-forming, and disaster-curing, this paper established a model for disasters. Firstly, constructing city index system, calculating the optimal combination weight(CW) by determining subjective weight(SW) objective weight(OW). Secondly, using cloud reveal uncertainty relationship between evaluation indexes level, comprehensive UFRA was obtained. Rainfall water information all kinds building types could be collected through SWMM, system disaster-causing GIS improved. Taking 100-year return period rainfall central area Zhengzhou City as example, level obtained, factors contributing each region were analyzed. results indicated that Jinshui District (JD) at high other districts sub-high risk. This provides new ideas

Language: Английский

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