三峡工程三期截流三维施工仿真研究

Study on 3D Construction Emulation of River Closure (Ⅲ-phase) of TGP

三峡工程三期截流提前到 2 0 0 2年 11月上旬进行 ,截流难度显著增大。为了使截流工程顺利进行 ,以先进的计算机可视化技术为基础 ,采用IMAGIS软件生成三维地形图 ,用Creator建模形成导流明渠、纵向围堰及三期围堰等三维实体模型 ,最后通过运用虚拟现实技术 ,开发出三峡工程三期截流施工实时动态演示、查询系统。该系统能根据需要实现漫游 ,可以随意定位到感兴趣的区域作细部观察 ,且具有良好的交互性。通过施工仿真研究 ,将三期截流施工过程生动地显示在屏幕上 ,用以指导施工组织管理 。

The difficulty of Ⅲ-phase river closure works of TGP increases notably because the date of river closure is moved up to the first ten-days of Nov.2002. For the convenience of construction, on the basis of computer visualization technique, the 3D topographic map of worksite is drawn out by IMAGES software, and the 3D models of diversion channel, longitudinal cofferdam and Ⅲ-phase cofferdam are emulated by Greator Model, then, using virtual reality technique, the dynamic realtime display and inquiry system for river closure construction is developed.This system has well alternative behavior and could be used for roaming and observing the detail of being interested area according one's will, thus, the Ⅲ-phase river closure course could be displayed on telescreen vividly for directing the organization management and decision-making.