基于雨水入流量反演的污水管网错接数值化定位  

Numerical analysis and location method of stormwater inflow in urban sewer network

作　　者：刘淑雅 徐祖信[1] 楚文海[1] 尹海龙[1] 祁海玥 LIU Shuya;XU Zuxin;CHU Wenhai;YIN Hailong;QI Haiyue(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《给水排水》2023年第6期150-156,共7页Water & Wastewater Engineering

基　　金：国家重点研发计划(2021YFC3200700,2021YFC3200702)。

摘　　要：分流制排水体制中,雨水管道错误接入污水管道致使雨水进入污水管网是污水管网普遍存在的问题。当前污水管网雨水入流研究着重分析区域整体入流水量占比,对入流点定位研究较少。针对该问题本研究提出一种新的污水管网错接定位的数值化分析方法,将优化算法与管网模型进行耦合,利用模型进行管网状态的水动力模拟,通过优化算法进行目标函数的优化求解,对污水管网错接点进行解析定位。实地验证结果表明,根据检查井水位监测可计算节点雨水入流量确定错接点位,进一步对监测点数量以及算法进行优化探究,结果表明随着监测点数量增加以及算法的改进,模型准确度均有提高。鉴于监测成本以及模型准确度,推荐GWO-PSO算法的60个监测点为最优工况,此时模型可定位到所有错接节点,即管网错接模型查全率为100%。因此,建立的污水管网错接数值化定位方法准确有效,可对管网的修复改造提供重要依据。Stormwater is conveyed to the wastewater treatment plant due to misconnection of stormwater drains to separate sewers which is a common problem in urban sewage pipe network.The current research focus on the analysis of stormwater inflow volume in the sewer network,and there are fewer studies on the location of inflow points.This study couples the optimization algorithm with the pipe network model that performs hydrodynamic simulation of the pipe network state.The model is used to solve the objective function optimally through an optimization algorithm to accurately resolve and locate the misconnections in the sewage network.The results show that this model obtains accurate localization.Model accuracy is influenced by the number of monitoring points and the type of algorithm.Simulation accuracy improves when the number of monitoring points increases or when simulated using the GWO-PSO algorithm.On this basis,this paper recommends 60 monitoring points for the GWO-PSO algorithm as the optimal working condition,when the model can locate all the misconnected nodes.Therefore,the numerical positioning method of misconnection of sewage pipe network established in this paper is accurate and effective,which can provide an important basis for the rehabilitation and renovation of the pipe network.

关 键 词：污水管网 错接 雨水入流 寻优定位模型 

分 类 号：TU992[建筑科学—市政工程]