基于GIS的洪水模拟仿真研究

本文采用二维非恒定流模型和引入VORONOI图进行网格单元的划分,对研究区域进行洪水演进模拟和系统分析,应用虚拟现实仿真技术和三维仿真的建模、制作等软件将正射影像与数字高程模型结合起来处理生成沈阳流域基础的三维地形,综合生成三维场景,将三维仿真地理信息系统与二维的地理信息系统（GIS）有机结合起来,并与计算机网络技术结合起来,实现二维与三维无缝结合、相互补充、网上三维场景浏览、网上三维信息查询。

Research of Flood Simulation Based on GIS

Through two-dimensional unsteady flow mode and VORONOI map introduced into the separation of grid cells,modeling the flood procession and system analyzing in the research area,applying simulation technology and the softwares of three-dimensions simulation modeling,facture and so on,combining the orthophotoquad projection and DEM to process and create three-dimension terrain of the base of the Shenyang valley,then complicatedly create the three-dimension scene,and organically combining the three-dimension simulated GIS and two-dimension GIS,and combining to computer network,carrying out the integration and supplement between two-dimension and three-dimension,viewing the three-dimension scene and querying the three-dimension information on the net.