Application research of gis were done in data display , flow analysis at inlet and outlet and information search about filling and emptying system and so on . first , edit , browse or search can be completed at the same time when the related figure is displayed . second , database which involves attribute data and space data about filling and emptying system can be created so as to do some search between figure and its attribute data 在船闸引航道信息显示与水流分析和输水系统信息查询分析等方面进行了gis技术应用研究： ( 1 )使图形与信息结合，在图形显示的同时，对船闸基本信息及引航道信息或输水系统信息进行编辑、浏览与查询； ( 2 )建立输水系统属性数据库，便于图形?数据交互式查询； ( 3 )在数学模型计算分析的基础上，将研究成果可视化。
