从管线数据来源及数据精度、数据模型、信息分类、数据语义等几个方面,对城市综合与专业两类地下管线空间数据进行深入的差异分析,提出差异形成的原因及消除差异的初步对策,以期对城市管线空间数据资源的集成、融合、共享、交换等技术提供支撑,并推动地下管线信息化统一标准的制定。 This paper analyzes the spatial data of urban integrated and professional underground pipelines in-depth from several aspects, such as the data sources of pipelines and data precision, data model, information classification and data semantics. It also proposes the reasons for the formation of differences and the preliminary countermeasures to eliminate the differences. With a view to providing support for such technologies as integration, integration, sharing and exchange of urban pipeline spatial data resources, the unified standard for informationization of underground pipelines will be promoted.