香港岛南区雨水管网改造总体规划概述

Introduction on the general planning of storm water drainage system in the south area of Hong Kong Island

香港岛南区雨水管网整体规划设计是临海、临江城市雨水管网规划设计的典型实例。重点介绍了该工程如何使用水力模拟软件辅助设计的基本方法以及其它相关内容:确定潮汐水位对雨水管网排水能力的影响,划分集水分区防洪级别,利用HydroWorks和MIKE11建立、校核、调整雨水管网的水文水力模型(以下简称模型)以保证模拟结果的可靠性,根据现状模型的运行结果对管网进行现状评价和洪水风险评估,利用规划模型辅助管网改造设计和方案最优化。

This general plan is a practical example for municipal storm water drainage system in area fronting to sea and river. The work was carried out on hydraulic simulating software based CAD process to compute the effect of tide altitude on the drainage capacity of the rainwater sewer and to distinguish the flooding classes. In the interest of the reliability of the calculated results, the hydrographic and hydraulic model of the rainwater sewer system was established, verified and regulated on the basis of HydroWorks and MIKE 11. The real status and flood risk assessments of the sewer system have been done by the computed real status results of the model and the storm water drainage system planning was optimized by the planning model aided design process.