流域治理视角下排水系统匹配性评估方法

Evaluation Methods of Drainage System Matching from the Perspective of Watershed Management

以城市化和气候变化为驱动的外部复杂性和不确定性对流域排水系统匹配性提出更高的要求,流域治理方案需要对排水系统匹配性进行系统分析,国外采取单体设施规模适度冗余设计、设施间的空间布局优化和系统联调联控技术,取得了很好的效果。以城市排水系统中的厂-池-站-网等主要排水设施为研究对象,提出流域厂-池-站-网匹配性指标体系、技术路线、评估内容与评估方法。根据厂-池-站-网排水系统匹配性评估结果,设计工程改造方案和联调联控方案,减少不必要工程投资的同时最大程度发挥各设施的调蓄、协同和处理能力,为城市排水系统优化提供参考和借鉴。

The complexity and uncertainty driven by urbanization and climate change put forward higher requirements for the matching of urban drainage system. The drainage systems need to be systematically analyzed under the governance scheme of watershed treatment. Good results have been achieved by adopting appropriate redundancy design of single facility scale,optimization of spatial layout,and system joint dispatching and control technology abroad. Taking a plant-tank-pump station-network in an urban drainage system as the research object,a watershed plant-tank-pump station-network matching index system,technical route,evaluation content and evaluation method are proposed.According to the matching results of the plant-tank-pump station-network drainage system,the project transformation plan as well as the system joint dispatching and control technology can reduce unnecessary project investment and maximize the storage,coordination and treatment capacity of various facilities,which can provide reference for the optimization of urban drainage system.