城市供水管网DMA的建立与小区总分表差控制研究

发布时间：2018-01-03 18:21

本文关键词：城市供水管网DMA的建立与小区总分表差控制研究　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：城市供水管网漏损现象比较普遍,漏损在浪费宝贵水资源的同时,还给供水企业带来了巨大的经济损失。因此,采用科学的方法来降低供水管网的漏损问题,是缓解我国水资源缺乏,保证我国社会和经济可持续发展的重要科学技术路线,具有重要的科学研究意义和经济价值。供水管网分区计量(DMA,District Metering Area)技术是近年来国内外普遍采用的漏损控制手段,其原理是在保证安全供水的前提下,利用阀门、流量计等装置将供水管网分割成一些相互独立的区域,通过分析不同区域的夜间流量,推测管网的漏损情况,并采取相应的漏损控制措施来控制管网漏损。本文以降低城市供水管网中的漏损为目标,进行了以下研究:首先,全面阐述了DMA的概念、分类、功能、设计目标及标准等,结合国内外DMA建立的经验,在我国华南地区某城市建立了C小区DMA。结果表明,通过示范小区DMA的工程实施,将DMA建立的理论与实践相结合,可以形成对该城市供水管网具有指导意义的DMA建立方法;然后,详细介绍了小区总分表差研究的理论知识,其中包括最小夜间流量和小区总分表差的构成与分析,并对已建DMA小区进行了总分表差实例研究。结果表明,通过对C小区总分表差的研究,可以快速发现小区的主要问题,量化小区总分表差的各项水量,并确定主控项。通过对主控项采取有针对性的应对措施,可以有效控制漏损,降低小区总分表差,提高供水回收率。同时,通过对示范小区DMA总分表差的研究,可以总结小区总分表差的研究方法,并为今后小区总分表差研究的推广奠定基础。实践证明:DMA技术可以切实有效的降低管网的漏损,将DMA技术的理论知识应用到实践中,具有良好的推广应用前景。
[Abstract]:City water supply pipe network leakage phenomenon, wasting precious water resources, water supply enterprises to bring huge economic losses. Therefore, the use of scientific methods to reduce the leakage problem of the water supply network is to alleviate the water resource of our country is lack of guarantee, science and technology route of China's social and economic sustainable development. It has important scientific significance and economic value. The water supply pipe network partition (DMA, District Metering Area measurement) technology is widely used for leakage control means at home and abroad in recent years, its principle is to ensure the safety of water supply under the premise of the use of the valve, and flow meter device of water supply network is divided into some independent regions, through analysis different areas of traffic at night, that the leakage of pipelines, and take corresponding measures to control the leakage of pipeline leakage control to reduce the city water supply network. The leakage as the goal, the following research: first, elaborated the DMA concept, classification, function, design objectives and standards, combined with domestic and foreign DMA experience, a city in China's Southern China region established C cell DMA. results show that through the implementation of demonstration area of DMA engineering, theory and practice DMA established the combination can form method has guiding significance for the city water supply network DMA; then, introduces the theoretical knowledge of the difference score table area, including minimum night flow and composition and analysis of differential cell score table, and the district has built DMA a case study score difference table. The results show that through the research on C cell difference score sheet, you can quickly find the main problems in the District, the district total water table quantitative difference, and determine the main control. Through the main control item to take targeted response Measures can effectively control the leakage, reduce the total area table, improve water recovery rate. At the same time, through the research on the demonstration area DMA score difference table, can summarize the research methods of poor area score table, and for the future lay the foundation for promotion of poor score table cell research. Practice proves that DMA technology can effectively reduce the the pipe leakage, DMA technology will be the theoretical knowledge into practice, and has good application prospects.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU991.33

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