摘要
以上海市核心建成区虹口北外滩为研究区域,构建融合管网拓扑优化与地表微地形修正的1D-2D耦合模型,精细化模拟城市高密度区域的暴雨内涝过程,并基于2020—2024年多场实测暴雨事件对模型的可靠性和适用性进行动态验证,同时基于该模型对北外滩区域的2套排水系统优化方案(方案1:新增雨水干管+滨江泵站扩容;方案2:干管改造+既有泵站效能提升)进行评估。结果表明:不同降雨条件下,构建的1D-2D耦合模型能够准确模拟城市高密度区域的暴雨内涝过程;在10年一遇设计暴雨情景下,方案1可使溢流节点减少52.5%,淹没面积缩减44.6%,较方案2(溢流节点减少47.3%,淹没面积减少42.2%)展现出更优的系统韧性。
By taking the North Bund area in Shanghai’s Hongkou District,the core built-up area,as the study region,a 1D-2D coupled model integrating pipe network topology optimization and surface micro-topography refinement was developed to precisely simulate rainstorm waterlogging processes in urban high-density areas.The model’s reliability and applicability were dynamically validated using multiple recorded storm events from 2020 to 2024.Based on this model,two drainage system optimization schemes for the North Bund area were evaluated(Scheme 1:adding new main stormwater pipelines+upgrading the riverside pumping station;Scheme 2:retrofitting main pipelines+enhancing the efficiency of existing pumping stations).Results indicate that the constructed 1D-2D coupled model accurately simulates rainstorm waterlogging processes in urban high-density areas under various rainfall conditions.Under the design rainstorm scenario with a 10-year return period,Scheme 1 achieves a 52.5%reduction in overflow nodes and a 44.6%decrease in inundated area,demonstrating superior system resilience compared to Scheme 2(47.3%overflow nodes reduction and 42.2%inundation area reduction)。
作者
王心舒
江思珉
郑茂辉
张虎
WANG Xinshu;JIANG Simin;ZHENG Maohui;ZHANG Hu(Department of Hydraulic Engineering,Tongji University,Shanghai 200092,China;Shanghai Institute of Disaster Prevention and Relief,Tongji University,Shanghai 200092,China;Key Laboratory of Urban Safety Risk Monitoring and Early Warning,Ministry of Emergency Management of the People’s Republic of China,Shanghai 200092,China)
出处
《河海大学学报(自然科学版)》
北大核心
2025年第6期49-56,共8页
Journal of Hohai University(Natural Sciences)
基金
上海市科技创新行动计划项目(21DZ1201205)。
