| The construction diversion for a large-scale hydroelectric engineerings is arather complex systems engineering which includes major engineers like dam,temporary ward and discharge water buildings and water-level variety subsystems etc.The parts of respective subsystem not only relate with each other, but also restrictwith each other and the relation of them is greatly intricate. To describe visually thecomplex space-time relationship among all sides of construction diversion and torealize the intuitionistic expression of construction diversion schemes, in this paper3D dynamic visual simulation and optimization for the construction diversion ofXiangjiaba hydropower station is researched. According to current project, it isdivided into four subsystems including cofferdam pouring, dam construction,earthwork excavation and dynamic water flow subsystem and then, comprehensiveanalysis is made about each subsystem. The main contents and achievements of thisthesis are summarily listed as following: Firstly. Systematical analyzing is applied to the construction diversion ofXiangjiaba hydropower station. Using the theory of decomposition-coordination andcontrolling for a large system, the construction diversion system of Xiangjiabaengineering including four subsystems is built. Then the simulation of the wholeconstruction diversion system is expressed with simulation anddecomposition-coupling of all subsystems. Secondly. The discrete system simulation method is adopted to obtain thedistribution situation of elevation of dam construction. Random simulation of waterlevel is gotten by Monte-Carlo method. Queuing system and cyclic operation networkis made use of in cofferdam simulation. At a rush time of construction intensity,earthwork excavation and traffic flow simulation analysis are validated whether it isreasonable. Thirdly. CAD integration system and simulation calculation result provideoriginal data for 3D dynamic visualization simulation which are stored by the specialspace database structure in GIS. Fourthly. The flow of the 3D dynamic visual simulation data of Xiangjiabaconstruction diversion is designed, and the combined function of dynamic display,interactive operation, visual inquiry, and spatial analysis is realized, and by applying3D Dynamic display method, dynamic simulation system for the process ofconstruction diversion is developed. Finally, practical developing way for 3D dynamic visual simulation andoptimization system of Xiangjiaba hydropower station is presented, and thesystematic structure is designed. System function is realized. The successfuldevelopment of the system provides a useful analysis tool for the management anddecision-making of construction diversion of Xiangjiaba hydropower station. |
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