【作者】 段焕丰；

【导师】 俞国平；

【作者基本信息】 同济大学 ， 市政工程， 2006， 硕士

【摘要】 本论文针对城市供水管网系统进行水力建模进行了理论研究和实践,并结合GIS等数据信息管理系统,形成能够方便运行使用的模拟软件。结合肇庆市供水系统水力模拟软件研究与开发工程项目,建立实用的水力模型,提出有效的水力计算算法,为城市管网系统运行管理、供水质量监测、水力模拟以及供水系统的改造扩建提供理论依据和运行决策。 本论文的理论研究主要分为三部分。第一部分研究了城市用水量调查处理技术和预测方法,对城市中的大用户进行了分类调查,提出了一种新的数据模式处理方法,并很好地应用到了肇庆市供水系统用水量数据处理中。第二部分研究了配水系统的配水模式与计算,对传统建模理论中关于沿线流量分配简化计算带来的误差,进行了影响敏感性分析;同时提出了沿线配水模式和水力计算公式推导形式。第三部分主要探讨了管网平差计算方法,提出了一种新的平差方法——基本回路法;并对于其中的计算机技术处理方法进行了研究,引入了压缩矩阵、基本回路生成树法以及改进平方根法等算法结合;同时,在计算过程中对枝状网也进行了技术处理,提高了计算的速度。 通过具体实例的应用实践与验证,证明了本研究提出的理论和算法的有效性和可行性。从各具体实例计算得到的结果来看,该方法在精度和速度上都得到了较大的改进。最后,对本研究需要进一步的工作方向进行了简要讨论,并提出了相关的建议和展望。更多还原

【Abstract】 This paper focused on the hydraulic modeling in water networks. Combining with GIS data management systems, an easy simulation code was programmed to practice the theoretical study. According to a real engineering project in Zhaoqing City, with the effective algorithms, a hydraulic model was set up to simulate the dynamic hydraulic conditions, monitor the water quality, operate and expand the water networks.The theoretical study of this thesis included three parts. The first part introduced the methods and techniques about urban water consumption investigations and forecasting. A new methodology to get the data patterns brought forward through the classing investigation for main consumers processed in the modeling, and furthermore, it was applied commendably in water demand data management in water supply systems of Zhaoqing City. The second part studied on the water distribution patterns and its computation for urban networks. It analyzed the influence of traditional method of flow distribution along the line, and put forward relevant deduced formula for that. Last part mainly discussed the hydraulic finite difference algorithm. With a new algorithm—Basic Loop Method—for hydraulic computation was suggested, some powerful algorithms such as compressed matrixes, Basic Loop Tree method and ameliorated square technique were introduced. Branch network was also treated technically to save the computer time.By the case study of water network simulation code, the effect and feasibility of the algorithm were proved. Form the results, this method improved the accuracy and speed of computation, the software package had high value in practice. Eventually, a simple discussion and suggestion on further work were presented.更多还原