基于GIS技术的城市暴雨积涝数值模拟与可视化——以哈尔滨市道里区为例

摘要

以哈尔滨市道里区为例,通过对城市暴雨积涝条件分析建立了城市暴雨积涝三层空间的概化模型;利用GIS技术作为可视化平台,以水动力学方法采用一维非恒定流对管道内水流进行模拟,以二维非恒定流对地面水流进行模拟,同时耦合一、二维非恒定流模型并结合无结构不规则网格,建立了城市暴雨积涝数值模拟模型,实现了对城市暴雨积涝的水深和积水范围模拟及可视化.%Taking Daoli District in Haerhin as an example, and by analyzing urban rainstorm waterlogging conditions, a generalized model of three-layer space of urban rainstorm waterlogging is established. Using GIS as a visualization platform, the pipeline flow and the surface flow are simulated respectively by the methods of onedimensional unsteady flow and two-dimensional unsteady flow. Coupled with unstructured irregular grids, a numerical simulation model of urban rainstorm waterlogging is established which can calculate the depth and the scope of waterlogging, and make the process visualization simultaneously.