摘要
以河南省1∶50 000的DEM数据为基础,采用分布式水文预报模型,研究了适合小流域和山丘区洪水的预报系统。介绍了研究区域DEM数据的河系提取、子流域划分和特征值提取,构建了具体的预报模型并开发了相应的预报预警软件。阐述了模型的雨量模型构建、产流、汇流和洪水演进算法,分析了无资料情况下分布式地貌单位线的生成和马斯京根模型参数的获取。结果表明,该方法可用于无资料小流域洪水分析计算和山洪预报预警。
The forecast system using distributed hydrological model for small watershed and mountain area in Henan Province is studied on the basis of 1：50000 DEM data.The extraction of river system,sub-watershed partition and feature data extraction in research area are introduced.A specific hydrological forecast model is established and the corresponding early forecast and warning software is developed.The rainfall model establishment,algorithm of runoff yield and conflux,flood routing are demonstrated.The generation of distributed geomorphological unit hydrograph and calculation of Muskingum model parameters are analyzed.The results show that this method can be applied in the calculation of flood and early warning of mountain torrent in small watershed.
出处
《人民长江》
北大核心
2013年第15期22-25,共4页
Yangtze River
