基于Mike Urban的山地城市管网水质模型构建与率定  

Construction and Calibration of Water Quality Model of Mountainous City Pipe Network Based on Mike Urban

作　　者：张宏宇 李莉[1] 赵志伟 赵正刚 温夫山 王文婧 王维忠 崔福义 ZHANG Hong‑yu;LI Li;ZHAO Zhi‑wei;ZHAO Zheng‑gang;WEN Fu‑shan;WANG Wen‑jing;WANG Wei‑zhong;CUI Fu‑yi(College of Environment and Ecology,Chongqing University,Chongqing 400045,China;Chongqing Haoyang Water Service and Construction Management Co.Ltd.,Chongqing 400020,China)

机构地区：[1]重庆大学环境与生态学院,重庆400045 [2]重庆市豪洋水务建设管理有限公司,重庆400020

出　　处：《中国给水排水》2023年第21期131-138,共8页China Water & Wastewater

摘　　要：山地城市在空间环境上较为独特,与平原城市相比,其管网模型有较大不同。针对山地城市特点,以重庆市李家沱污水厂服务片区为例,运用Mike Urban建立管网水力模型,结合不同降雨事件全过程的水质实测数据,构建水力水质耦合模型。采用正交试验法率定,研究各因素对模型质量的影响,并得到较优参数组合。率定后模型对COD、总氮、氨氮、总磷模拟结果的纳什效率系数(NSE)分别达到0.7288、0.6271、0.6601和0.6959,模型质量显著提高,证明了该率定方法的可行性,对试验区域的污水厂运营有建设性的意义。The spatial environment of mountainous cities is unique,and its pipe network model is quite different from that of plain cities.Based on the characteristics of mountainous cities,a pipe network hydraulic model of the service area of Lijiatuo Wastewater Treatment Plant in Chongqing was established by using Mike Urban,and a coupled hydraulic and water quality model was constructed by combining the measured water quality data in the whole process of different rainfall events.The influence of each factor on the quality of the model was investigated by calibration of orthogonal test method,and the optimal parameter combination was obtained.After calibration,the Nash-Sutcliffe efficiency coefficients(NSE)of COD,total nitrogen,ammonia nitrogen and total phosphorus reached 0.7288,0.6271,0.6601 and 0.6959,respectively,which significantly improved the quality of the model.This paper proves the feasibility of the calibration method,and provides constructive significance for the operation of wastewater treatment plants in the test area.

关 键 词：水质模型 Mike Urban 合流制污水管网 山地城市 率定 

分 类 号：TU992[建筑科学—市政工程]