溪洛渡水电站是在金沙江拟建的最大水电站，为直观准确地描述其施工总布置设计所涉及的各施工环节之间复杂的动态空间关系，将施工总布置系统分为若干子系统，对整个设计施工过程进行动态可视化图形仿真研究。设计3维动态图形仿真数据流向，将溪洛渡施工总布置动态图形仿真数据分为空间数据和属性数据，以GIS为平台组织数据结构，构造施工总布置3维动态可视化数字模型；在3维动态可视化数字基础上实现施工总布置3维动态可视化图形仿真演示和动态图形仿真数据可视化查询，给施工总布置设计与决策提供一个科学、直观的可视化分析途径。

Xiluodu hydroelectric plant is the biggest plant to be built on Jinsha River, and also, Xiluodu project is the biggest hydraulic engineering in China except Three George Project. To intuitively and accurately describe the complex and dynamic spatial relationship among all sides interfered in construction layout design of Xi Luodu project, the construction layout system is divided into 6 subsystems： dam construction, diversion and enclosure construction, dynamic water flow, underground structure construction, quarry stacking and redigging, and road and traffic inside construction site, and the research on 3D dynamic visual graphic simulation for construction layout of the designed whole construction process is developed. Flow of the 3D dynamic graphic simulation data is designed. Dynamic graphic simulation data can be divided into graphic data and attribute data, which organized based on GIS, then, 3D dynamic visual digital model for construction layout is built, which itself is an important part of digital hydraulic engineering. 3D dynamic visual graphic simulation demonstration and visual inquiry of dynamic graphic simulation data are realized with this digital model. Practical engineering application shows that a scientific and intuitive visualization analysis way is provided. for construction layout design and decision-making by this research, moreover, hydroelectric design work will be promoted to develop in an intellective and modern way, and the research is worth to be spread.