将可视化技术与仿真技术相结合，提出了基于GIS的混凝土坝施工可视化仿真技术，开发了相应的软件GVSS。GVSS是用于制定和优化混凝土坝施工进度计划的工具，提供了可视化和查询等功能。通过将GVSS应用到实际的混凝土坝施工中，证明了该项技术和软件的有效性。

This paper presents a GIS-based visual simulation methodology for concrete dam construction process, in which system simulation techniques are integrated with visualization techniques. GIS-based visual simulation system (GVSS) was developed by the authors. GVSS is a powerful schedule planning tool offering visualizing and querying capabilities simultaneously. GVSS has been applied to a real concrete dam construction project, which verified the feasibility of the methodology and GVSS.