基于管网水力模型的管道瓶颈判定方法及其应用

Diagnosis Method of Bottleneck Pipes Based upon Hydraulic Model of Drainage System and Its Application

排水系统达标改造是我国城市排水管理面临的长期问题,管道性能的科学评价诊断是确定排水系统改造方案的前提。制订排水管网改造方案的传统方法为采用单一管段分析、逐根管线估算的方法,未能综合考虑系统运行的水力性能与实际状况。笔者结合上海市某排水系统改造工程的设计,以管网水力模型为工具,提出采用水力坡度比值法识别瓶颈管段,具体地确定了改造对象及改造工程的实施顺序。研究成果与分析方法对今后排水系统改造方案的决策与优化具有借鉴意义。

The up-to-standard reconstruction of drainage system is a long-term issu water authorities in China. The scientific evaluation and diagnosis are the premise for dete construction scheme of drainage system. The traditional method for determination of the e faced rmining by city the re- reconstruction scheme of drainage system adopts individual pipe analysis and pipe-by-pipe estimation without considering the hydraulic performance and actual status of the drainage system. Combined with the reconstruction project of a drainage system in Shanghai City, the hydraulic model of drainage system was built up and hydraulic slope ratio method was used to identify bottleneck pipes, which assisted to establish the recon- struction scheme and the order of priority. The research result and method have a reference value for the decision-making and optimization of future reconstruction scheme of drainage systems.