上海市城市内涝风险分析与评估OA
Risk analysis and assessment of urban flooding in Shanghai
结合多重现期暴雨情景分析与指标体系法,以典型平原感潮河网高度城市化地区——上海市中心城区为例,开展了城市内涝综合风险评价和特征分析.结果表明,上海市中心城区内涝综合风险以低风险为主,低风险、中风险、较高风险、高风险区域面积占比分别为87.60%、7.91%、3.58%、0.91%,多数镇(街)为一般防治区,一级重点防治区和二级重点防治区的面积占比分别为1.32%和1.31%.基于"危险性—易损性—安全性"的风险评估框架,全面评价社会经济发展情况下灾害危险性、承灾体易损性和防灾减灾安全性,有利于提升城市内涝安全韧性水平.
Combining the method of multiple return period rainstorm scenarios with the index system method,taking the highly urbanized area of typical plain tidal river network in the central urban area of Shanghai as an example,the comprehensive risk assessment and characteristic analysis of urban flooding were carried out.The results show that the comprehensive risk of urban flooding in the study area is mainly low risk,and the area ratios of low,medium,higher and highest risk areas are 87.60%,7.91%,3.58%and 0.91%respectively.Most districts are general prevention zones,and the area ratios of first-level key prevention zones and second-level key prevention zones are 1.32%and 1.31%respectively.The risk assessment framework of"hazard-vulnerability-safety"can comprehensively evaluate the disaster hazard,disaster-affected body vulnerability and disaster prevention and mitigation safety under the situation of social and economic development,which is conducive to improving the resilience level of urban flooding safety.
李学峰;谭琼;钱真
上海市水务规划设计研究院(上海市海洋规划设计研究院),上海 200233
地球科学
城市内涝评估指标体系情景分析风险评估与区划上海市
urban floodingassessment index systemscenarios analysisrisk assessment and zoningShanghai City
《中国防汛抗旱》 2024 (006)
26-32 / 7
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