以皎口水库为例,利用HEC-RAS软件建立水库下游一二维耦合水动力模型,通过"烟花""梅花"2场台风的历史洪水模拟计算钟家潭、章水断面的水位变化过程,与实际情况对比发现,该模型计算结果合理准确;模拟极端洪水(P=1％、P=0.1％)情况下,水库下游淹没范围、淹没水深、淹没历时等要素;基于BIM(Building Information Modeling)、GIS(Geographic Information System)等技术进行洪水演进过程三维立体可视化展示,为水库下游洪水风险分析提供技术支撑,为智慧水利建设提供解决方案.
Construction and 3D Hydrodynamic Model of Downstream Reservoir Based on HEC-RAS Visualization Application
Taking Jiaokou Reservoir as an example,a one-dimensional and two-dimensional coupled hydrodynamic model of the reservoir downstream was established using HEC-RAS software.Through simulation calculations of historical floods caused by No.1526 Super Typhoon In-fa and No.1109 Super Typhoon Muifa,the water level changes at the sections of Zhongjiatan and Zhangshui were simulated.Compared with the actual situation,it can be found that the calculation results of the model are reasonable and accurate;and factors such as the downstream inundation range,inundation depth,and inundation duration of the reservoir under extreme floods(P=1％,P=0.1％)were simulated.Finally,based on BIM(Building Information Modeling)and GIS(Geographic Information System)technologies,a three-dimensional visualization display of the flood evolution process was carried out,providing technical support for downstream flood risk analysis of the reservoir and providing solutions for smart water conservancy construction.
1D and 2D couplinghydrodynamic modelflood evolution3D visualization
万方数据
维普
