【摘要】 针对城市公共安全应急平台的应用需求,建立了水污染扩散的二维数值模型,采用隐格式的有限差分法联合求解水动力方程和污染扩散方程,获得污染物浓度的时空分布,同时研究了基于GIS的水污染扩散模拟结果的可视化方法和途径.通过某河道水污染扩散模拟的实例分析,验证了模型及其算法的有效性和实用性,并在ArcGIS平台上实现了模拟结果的动态可视化,为水污染事故灾害应急处置和决策提供重要依据.更多还原

【Abstract】 A two-dimensional numerical model is established to satisfy the application needs of urban public security emergency platform.The finite difference method has been employed in solving the hydrodynamic model equations combined with the pollutant transportation equation to get the spatial and temporal distribution of the pollutant concentration.And then the GIS-based visualization of water pollution simulating results is studied.Through an experimental water pollution simulation in a river,the validity and practicability of the model are proved;and then the dynamic visualization of the simulating results is realized on ArcGIS platform.更多还原