Comparison of flood hazard assessment criteria for pedestrians with a refined mechanics-based method

IF 3.1 Q2 GEOSCIENCES, MULTIDISCIPLINARY
G. Musolino, R. Ahmadian, R.A. Falconer
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引用次数: 16

Abstract

Floods have caused severe destruction and affected communities in different ways throughout history. Flood events are being exacerbated by climate change and hence it is increasingly necessary to have a more accurate understanding of various aspects of flood hazard, particularly for pedestrians. The focus of this study is therefore to investigate different criteria to assess the flood hazard for pedestrians and to propose improvements in assessing such hazards. The revised mechanics-based approach reported herein gives results based on a full physical analysis of the forces acting on a body and can be universally applied as the method can be fine-tuned for different region of the world. The results from flood hazard assessments can be used to: design evacuation plans, improve resilience of sites prone to flooding and plan more resilient future developments. Extreme flood events in the UK and documented for Boscastle (2004) and Borth (2012) were used as case studies. Two approaches were considered, including: (i) a mechanics-based approach, and (ii) an experimental-based approach, with the criteria for the stability of pedestrians in floods being compared for the criteria used by regulatory authorities in Australia, Spain, UK and USA. The results obtained in this study demonstrate that the mechanics-based methods are preferable in determining flood hazard rating assessments.

基于精细力学方法的行人洪水危险性评价标准比较
纵观历史,洪水造成了严重的破坏,并以不同的方式影响了社区。气候变化加剧了洪水事件,因此越来越有必要更准确地了解洪水危害的各个方面,特别是对行人。因此,本研究的重点是探讨评估行人洪水危险的不同标准,并提出评估这些危险的改进措施。本文报告的修正的基于力学的方法给出了基于作用于物体的力的完整物理分析的结果,并且可以普遍应用,因为该方法可以针对世界不同地区进行微调。洪水灾害评估的结果可用于:设计疏散计划,提高易受洪水影响地区的复原力,并规划更具复原力的未来发展。英国的极端洪水事件以及记录在案的波士顿(2004年)和博思(2012年)被用作案例研究。考虑了两种方法,包括:(i)基于力学的方法和(ii)基于实验的方法,将行人在洪水中的稳定性标准与澳大利亚、西班牙、英国和美国监管机构使用的标准进行比较。研究结果表明,基于力学的方法是确定洪水灾害等级评价的较好方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Hydrology X
Journal of Hydrology X Environmental Science-Water Science and Technology
CiteScore
7.00
自引率
2.50%
发文量
20
审稿时长
25 weeks
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