河道洪水演进数值模拟及其在GIS平台上的可视化  

Numerical simulation of flood routing in watercourse and its visualization on GIS platform

作　　者：吴迪军[1,2] 孙海燕[1] 黄全义[3] 李静兰[1] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]中铁大桥勘测设计院有限公司,武汉430050 [3]清华大学公共安全研究中心,北京100084

出　　处：《测绘科学》2009年第6期242-243,189,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金项目资助(40274005)

摘　　要：针对公共安全应急平台中灾害预测预警和应急处置的快速反应需求,建立了基于圣维南方程的河道洪水演进的水动力学模型。采用库朗格式的特征线方法对基本方程进行数值求解,得出水位和流量沿河道的时空变化关系,在此基础上进一步研究了基于GIS的洪水演进可视化方法。最后,通过天然河道模拟实例验证了所建模型的可靠性和实用性。To meet the needs of quickly response for disaster forecast and pre-alarm and emergency disposition on the public safety emergency platform, a hydrodynamic model of flood routing in watercourse is established. The equations are settled through the convenient Kulan＇ s format of the diagnostic line method to obtain the temporal and spatial variation relations of the water level and flux along the watercourse. Moreover, the visualization method of flood routing based on GIS platform is studied. Finally, the model is tested by a practical watercourse flood routing simulation example.

关 键 词：河道洪水演进 数值模拟 GIS 可视化 应急平台 

分 类 号：P208[天文地球—地图制图学与地理信息工程]