暴雨灾害情境下城市雨水管网韧性评估

Assessment on Resilience of Urban Rainwater Pipe Network under Rainstorm Disaster Scenarios

摘要:

随着我国城市化进程的不断推进和全球气候的变化，极端天气带来的暴雨、洪涝等自然灾害频发，严重威胁城市的安全与发展。雨水管网作为城市基础设施生命线工程的重要组成部分，对于雨水分流和处理具有重要作用。以城市雨水管网系统为基础，结合韧性理论，借鉴PSR模型，构建了城市雨水管网韧性评价指标。并建立“组合赋权-可拓云”评估模型，最后利用贵州省某市区实例进行验证，对韧性指标进行量化，得到了不同强度下雨水管网系统的韧性等级，并将评价结果可视化呈现，以更好的帮助决策者和城市规划者理解和应对城市雨水管网的挑战和风险。

Abstract:

With the continuous acceleration of urbanization in China and the change of the global climate, the natural disasters such as rainstorms, waterlogging and floods caused by extreme weather occur frequently, seriously threatening the safety and development of cities. As a key component of urban infrastructure lifeline project, the rainwater pipe network plays a significant role in rainwater separation and treatment. Taking an urban rainwater pipe network system as the basis, and combined with the resilience theory, by using the PSR mode, the resilience evaluation indicators of urban rainwater pipe network are built, and a “combined weighting - extension cloud” assessment model is established. Finally, an example of an urban area in Guizhou Province is used for verification, and the resilience indicators are quantified to obtain the resilience grades of the rainwater pipe network system under different rainfall intensities. The evaluation results can be visualized to better assist decision-makers and urban planners in understanding and responding to the challenges and risks of urban rainwater pipe networks.