考虑地下管网健康状态的城市内涝韧性评估模型研究OA

As rainfall continues to intensify and urbanization rapidly advances,urban flooding has become a widely concerned urban governance challenge globally.In this context,resilient cities have emerged as a crucial concept guiding urban construction and infrastructure maintenance.Focusing on the dynamic coupling between the health status of urban drainage networks and the evolution process of rainfall-induced waterlogging,this study quantitatively analyzes the impact of drainage network defects on the waterlogging resilience within local urban areas by combining InfoWorks ICM simulation with the entropy weight method.The research findings indicate that:(1)After incorporating network defects as an important factor into the waterlogging resilience index system,the weight of the pressure layer increases significantly from 0.206 0 to 0.402 1,making it the dominant criterion layer.Specifically,the weights of network blockage count and network fracture count are 0.162 0 and 0.067 3,respectively,serving as core negative indicators,contributing 22.93%to the overall weight.Evidently,drainage network defects are a significant cause of urban waterlogging;(2)The waterlogging resilience index is positively correlated with the health status of regional drainage networks,meaning that the lower the degree of network defects,the higher the waterlogging resilience index,indicating a higher level of resilience to waterlogging in the area.(3)For waterlogging prevention and control in areas with different resilience levels,differentiated resilience enhancement strategies are proposed.High-resilience areas should prioritize refined routine operation and maintenance;medium-resilience areas should focus on network defect repair and rainwater-sewage diversion renovation;low-resilience areas should undertake ecological renovation to fundamentally enhance regional flood storage capacity.The evaluation method established in this study can lay a foundation for resilience assessment in similar areas and provide a basis for more scientific urban planning,pipe network renovation,and emergency response decision-making for waterlogging.