【作者】 李黎武；

【导师】 许仕荣；

【作者基本信息】 湖南大学 ， 市政工程， 2002， 硕士

【摘要】 本文介绍了城市给水管GIS系统及GIS环境下给水管网工况分析系统的设计思想、总体结构和关键技术。以MapInfo为平台，基于OLE技术采用Visual Basic 6．0编程实现了该应用软件。 CPA_GIS系统利用MapInfo管理给水管网的属性数据和图形，利用VB开发应用软件，通过OLE技术实现应用软件对MapInfo操作和系统间的数据交换。使应用软件不仅具有强大的空间数据管理功能，而且还具有强大计算和分析功能。 本文详细介绍了CPA_GIS的关键技术，提出了在GIS环境下建立给水管网动态水力模型的方法和过程，以及给水管网的结构分析方法和以水表抄水量为基础的给水管网水量的统计分析方法。实践证明在此基础上动态生成的给水管网水力计算模型较为真实可靠地反映了给水管网的实际水流状况。 在水力计算的基础上，提出了利用拓朴理论进行管网的工况分析的方法，确定了多水源供水管网各水源供水区域、供水路径；实现等水压线的自动绘制；建立了给水管网余氯浓度的分布模型；进行了给水管网事故对策分析。 实践证明，本文提出的在给水管网GIS的基础上进行深度开发的方法是可行的。更多还原

【Abstract】 A GIS of urban water distribution system and analysis system under GIS environment are introduced, including its design thought general structure and key technology. It is developed using VB6.0 on the basis of MapInfo and is supported by OLE.CPA-GIS use the Maplnfo to manage attributable information and geography. The application program operating Maplnfo and data exchange between the systems is developed through OLE. The system have powerful ability of spatial data management computation and analysis.As the key technology of CPA-GIS, the methodology and process of establishing dynamic models of calculation are presented. Analysis of the network’s structure and statistical analysis of water quantity are described. Experiment proved that the calculation model could represent the flow of water in networks reliably.A topological-based method for determination of source-serving districts and drawing pressure-contour in multi-source networks was developed, a matrix describing topological relationship between lines and joins in the multi-source networks was set up for the computer-aided analysis. Graph display of source-serving districts, dividing lines and pressure-contour was performed.更多还原