基于分布式洪水模型的北京城区道路积水数值模拟：以万泉河桥为例  

Numerical simulation of street inundation based on distributed urban flood model: A case study in Wanquanhe flyover bridge of Beijing

作　　者：潘安君[1] 侯爱中[1] 田富强[1] 胡和平[1] 

机构地区：[1]清华大学水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水力发电学报》2012年第5期19-22,共4页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(50823005);清华大学水沙科学与水利水电工程国家重点实验室基金项目(20089-TC-1)

摘　　要：道路积水影响交通,打乱城市正常的生产生活秩序,在我国快速城市化和气候变暖的背景下问题显得更为突出。采用数值模型对城市暴雨径流进行模拟,理清道路积水原因,对积水点综合治理和实时抢险有重要作用。本文开展了分布式立体化城市洪水模型在北京清河上游流域的验证和应用,对不同重现期和历时的设计暴雨情景下万泉河桥积水过程进行了计算分析,提出以30cm积水深度为阈值(小轿车正常行驶的最大积水深度)定义道路节点的排水标准,结果表明万泉河桥处的排水标准为5年一遇30分钟暴雨过程或者1年一遇120分钟暴雨过程。Street inundation that occurs more frequently in urban areas of China, produces a significant impact on traffic and even causes loses of properties and lives. Numerical model can simulate urban storm runoff and figure out the underlying causes of street inundation, and it is also of great importance to harnessing of street inundation. This work applies a distributed urban flood model, developed independently by the authors, to the urbanized Qinghe watershed in Beijing. The simulations show a good agreement with the street inundation data monitored at Wanquanhe flyover bridge. Application of this model to different scenarios of design storms shows that a storm stronger than 30min duration of 5-year return period or 120min duration of 1-year return period will cause street inundation at the bridge with the maximum inundation deeper than 30cm, and hence a serious traffic jam.

关 键 词：城市排水 分布式城市洪水模型 数值模拟 设计暴雨 

分 类 号：TV122[水利工程—水文学及水资源]