不同地区DMA流量特征分析与漏失评估  

Flow characteristics analysis and leakage assessment for DMAs in different regions

作　　者：陈国栋 刘阔 倪炯 陈胜阳 徐强[1,2] 强志民 CHEN Guodong;LIU Kuo;NI Jiong;CHEN Shengyang;XU Qiang;QIANG Zhimin(Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Waterzworks Group,Beijing 100031,China;Shangyu District Shaoring Municipal Water Group Co.,Ltd.,Shaoring 312300,China;Shaoring Shangyu District Water Supply Co.,Ltd.,Shaoring 312300,China;State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]中国科学院生态环境研究中心饮用水科学与技术重点实验室,北京100085 [2]中国科学院大学,北京100049 [3]北京市自来水集团有限责任公司,北京100031 [4]绍兴市上虞区水务集团有限公司,绍兴312300 [5]绍兴市上虞区供水有限公司,绍兴312300 [6]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《给水排水》2023年第4期113-117,123,共6页Water & Wastewater Engineering

基　　金：国家重点研发计划项目(2019YFD1100105);国家自然科学基金项目(52170105);中国科学院青年创新促进会项目(2019043)。

摘　　要：供水管网漏失是城镇供水管理面临的重要挑战。基于管网独立计量区(DMA)的流量特征来评估管网漏失是目前常用的技术,但不同地区管网的运行状况与用户用水模式不同,漏失评估技术参数的设置也应有所不同。因此,分析不同地区DMA的流量特征对漏失评估具有重要的意义。以我国华北、华东、华南、西北四个地区共计91个DMA为研究对象,分析了流量时变化、流量月变化、最小夜间流量(MNF)出现时间等流量特征,发现各地区DMA流量特征呈现出不同的规律;采用MNF与日均流量(F)比值(MNF/F)、单位户数与单位管长MNF分布等方法评估了DMA漏失情况,认为综合考虑这三个指标可对DMA的漏失状况做出更客观的评价。Leakage of water distribution systems is a main challenge In urban water supply management.It is a common technique to assess pipe leakage based on flow characteristics analysis in district metered area(DMA).However,due to the differences in operation conditions of pipe networks and user water consumption patterns in different regions,the parameters of leakage assessment techniques should also be different.Thus,it is important to analyze the DMA flow characteristics in different regions to assess leakage.A total of 91 DMAs in North China,East China,South China and Northwest China were studied in this paper.The daily and monthly variations of flow and the occurrence time of minimum night flow(MNF)were investigated to find that the flow characteristics differed among the DMAs in different regions.Finally,the ratio of MNF to average daily flow(MNF/F)and the MNF distribution per unit number of households and per unit pipe length were used to evaluate the DMA leakage condition.It was considered that the three indexes can be used to evaluate the DMA leakage condition more objectively.

关 键 词：独立计量区 最小夜间流量 用水特征 管网漏失 

分 类 号：TU991[建筑科学—市政工程]