河口城市主要河道防洪标准研究

Research on Flood Control Standards for Major Waterways in Estuarine Cities for Huangpu River in Shanghai

摘要:

河口城市主要河道一般受上游洪水、本地暴雨、下游潮水的共同作用，确定此类河道的防洪标准时，需在传统路径基础上考虑区域及水文特性。以黄浦江为例，结合防洪能力提升需要，通过与国内外同等级城市及周边城市的防洪标准对比、适应性水情场景设计、高精度感潮河网模型和城市漫流模型的构建与模拟，对防洪标准确定原则和技术方法进行了优化，最终确定其防洪标准为市区段维持1 000 a一遇，上游干流段由50 a一遇提升至100 a一遇。

Abstract:

Major rivers in estuarine cities are typically influenced by upstream floods, local rainfall and downstream tides. The determination of flood control standards for these rivers must consider the regional characteristics and hydrological conditions on the basis of the traditional path. Taking the Huangpu River as an example, combined with the need for upgrading the flood control capacity, by comparing the flood control standards of comparable cities at home and abroad and the neighboring cities, designing the adaptive hydrological scenarios, constructing and simulating the high-precision tidal river network model and urban sheetflood model, the determination principle and technical method of flood control standard are optimized. It is finally determined that the flood control standard for the urban section would be maintained at once every 1,000 a, and for the upstream main stream section world be raised from once every 50 a to once every 100 a.