Abstract
Nowadays, with the wide application of the geographic information system in water conservancy and hydropower projects, workload of three-dimensional digital model building the dam has become very large and complicated. However, the combining development of AutoCAD and ArcGIS can greatly reduce its workload and improve the working efficiency and modeling accuracy. This paper mainly conducts a preliminary study on dam three-dimensional modeling development in water resources and hydropower projects in the application of ArcGIS, and introduces the process of CAD data transferring into GIS data based on AutoCAD and its component technology.
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