张掖市水利工程现状信息系统开发与应用

Development and Application on the Information System of Water Conservancy Project Statues for Zhangye City

张掖市水利工程现状信息系统,采用遥感判读和GPS实地测量相结合的方法获取张掖市水利工程现状的空间数据,由张掖市水务局和各水管所提供属性数据,同时采集了相关的专题信息和背景信息。最终采集的水利工程数据包括干渠159条、支渠782条和斗渠5315条,总长度8745.0km,机井6228眼,水库43座。对数据的采集过程进行了详细介绍,并对水利工程图层的数据精度做了初步评价,为数据使用者提供很好的参考。在此基础上,利用组件式GIS技术完成系统开发,是我国流域尺度上最为全面的水利工程信息管理平台之一。已在后期的专题图集制作、决策支持系统研发、社会经济模块研发和水文建模等方面得到了广泛应用。对系统中关键信息灌溉渠道的干支斗比例、密度和走向特征进行了进一步的分析,结果表明其特征具有十分明显的尺度效应,在张掖市、五县一区和灌区三级尺度上,不同的特征得以显现。

The Information System of Water Conservancy Project Statues for Zhangye City（ISWCPZY）was developed based on the remotely sensed image interpretation and in-situ Global Position System（GPS）measurement,which were used to collect the geographic spatial data of the water conservancy project statues.The linked attribute data were provided and collected by the Zhangye Water Conservancy Bureau and its subordinate water management stations.The correlative thematic and background information were also collected.The data of the water conservancy project include 159 main canals,782 branch canals,5 315 lateral canals,6 228 pumping wells and 43 reservoirs.The total length of the canals is 8 745.0km.The data collection procedure is introduced in detail and the data quality of the water conservancy project is evaluated preliminarily in this paper,which would afford important reference for the data users.The ISWCPZY was developed by using Components GIS technologies and based on these data resources.T he ISWCPZY,as one of the most integrated information management platforms of water conservancy project,has been widely used in the thematic atlas compilation,decision-making supporting system development,social and economical module development,hydrological model construction,and so on.The canal,as the key information in the ISWCPZY,was analysed on the length ratio of different classes of canals,density,and direction.The results elicit obvious scale effects among the Zhangye City level,county or district level,and water management station level.