结合城市更新的老旧片区排涝能力提升研究

Research on Enhancing Drainage and Waterlogging Prevention Capacity of Old Districts in Combination with Urban Renewal

摘要:

在大力推进城市更新建设的背景下，城市老旧片区排水防涝系统更新提升是推动城市高质量发展，打造韧性城市的重要举措。针对老旧片区排水设施标准偏低、服务品质低下、模式单一，且改造在空间和时间上受限等问题，结合城市更新行动，提出了排水防涝系统的更新策略，包括从系统提升上强化高标准建设、从实施层面上加强多维度统筹协调、从工程效益上采用小切口微更新方式等。以天津路排水系统为例，通过分析现状特征，阐述了“源头径流减排、中途转输提标、末端泵站保障”3个方面的更新措施。利用InfoWorks ICM模型，进行规划更新前、后排水管网能力和内涝风险评估，从而支撑片区排水防涝设施能力提升。

Abstract:

Under the background of vigorously promoting urban renewal， the renewal and enhancement of drainage and waterlogging prevention systems in old urban areas are the important measures to promote the high-quality urban development and build the resilient cities. In response to the problems in old urban areas， such as low standards， poor service quality and single model of drainage facilities， and the limitations in space and time for renovation， the renewal strategies for the drainage and waterlogging prevention system are proposed， including strengthening high-standard construction from the perspective of system improvement， enhancing multi-dimensional overall coordination at the implementation level， and highlighting characteristics in combination with urban renewal. The renewal measures in three aspects， namely ''reduction of source runoff， upgrading of intermediate transfer and transportation standards and guarantee of terminal pumping stations'' are expounded. The InfoWorks ICM model is utilized to assess the capacity and waterlogging risk of the drainage pipe network before and after the planned renewal， thereby supporting the improvement of the drainage and waterlogging prevention capacity in the area.