数字化截流及其三维动态可视化仿真

在大江大河上进行截流给施工组织设计和管理带来巨大的困难。科学、直观地描述和分析截流过程中龙口水力指标的动态变化以及它与戗堤进占之间复杂的时空逻辑关系，进而辅助设计和支持决策，是提高设计效率和决策水平的关键。利用地理信息系统(GIS)及可视化技术把截流系统数字化，并在此基础上，结合龙口水力指标的动态分析，提出了基于GIS的截流施工过程三维动态可视化仿真技术，实现了截流过程的逼真预演和多方案的比较分析，从而为截流组织设计与决策提供了强有力的可视化分析手段。

River Closure Digitalization and Three-Dimensional Dynamic Visual Simulation

It is great difficult to make a construction plan for river closure in a great river. The key problem to improve the efficiency of river closure design and management is how to analyze scientifically the changing of the hydraulic characteristics and describe visually the time-space relationship between these characteristics and the closing dike, and then how to aid design and support decision-making. In order to solve the problem, this paper presented a digitalization and visualization approach for the river closure layout at first, using geographic information system(GIS) and the visualization technique. Based on this, with the analysis of the dynamic hydraulic characteristics at the closure-gap, a method of GIS-based three-dimensional dynamic visual simulation for the complex process of river closure was presented too. In this visual representation, comparison among different schemes of river closure was achieved easily. Therefore, a powerful tool for aiding river closure design and ma-nagement could be provided.