摘要
针对有些城市(特别是沿海地区城市)遇大到暴雨容易出现内涝的问题,经分析,主要是没有将城市排涝与城市的自然地理位置及其周边江河洪水的特性结合考虑,城市排水设计方法上的滞后性是城市内涝的原因之一。为解决这一问题,应用圣维南方程组,对明渠、雨水管道及田面汇流等多个排水系统的关键组成部分进行表达,通过彼此之间的联接关系,建立了城市市政排水与区域排涝的水动力耦合模型。实例应用表明,该模型能客观反映承泄区河道水位顶托及长历时暴雨对城市排水的影响,可广泛应用于城市排水的规划设计工作中。
Some cities, especially the costal cities, are prone to waterlogging when the storm occurs. The analysis shows that the geographical location of the city and the flood characteristics of the surrounding rivers are not comprehensively considered with the urban waterloging release, so the backward design method of urban drainage is one of the main causes of the waterlogging. To solve the problem, Saint Yenant equations are used to express the key components of various water release system such as the open channel, rain pipe and field confluence, and through the connection relation among these components, a coupled hydraulic model for the urban drainage and regional waterlogging release is established. The practical application shows that the model can reflect the influence of river backwater and long - term storm on the urban drainage, which can be widely used in the urban drainage planning and design work.
出处
《人民长江》
北大核心
2015年第18期15-19,47,共6页
Yangtze River
基金
水利部公益性行业科研专项经费项目(201101055)"钱塘江河口地区城市排涝关键技术及应用研究"
关键词
市政排水
区域排涝
水动力耦合模型
城市内涝
urban drainage
regional waterlogging release
coupled hydraulic model
urban waterlogging
