| 基于DEM的应急水文事件流域特征自动提取 |
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| 引用本文： | 李蓉. 基于DEM的应急水文事件流域特征自动提取[J]. 水利水电技术, 2012, 43(2): 1-4 |
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| 作者姓名： | 李蓉 |
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| 作者单位： | (中国水利水电科学研究院，北京100048) |
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| 基金项目： | 水利部公益性行业科研专项，国家"十一五"科技支撑项目，国家创新方法工作专项 |
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| 摘 要： | 以唐家山堰塞湖上游集水区域为例,研究了基于数字高程模型(DEM)提取流域河网和划分子流域的方法,并采用OpenGL和.NET技术从底层开发了三维GIS应急分析系统。以此,完成了集水区面积、回水长度、回水面积、库容等一系列流域特征值和滑坡体特征值的提取。
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| 关 键 词： | 流域特征 GIS,DEM 自动提取 应急水文事件, |
| 收稿时间： | 2011-08-24 |
DEM based auto-extraction of catchment properties for emergency hydrological event |
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| LI Rong. DEM based auto-extraction of catchment properties for emergency hydrological event[J]. Water Resources and Hydropower Engineering, 2012, 43(2): 1-4 |
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| Authors: | LI Rong |
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| Affiliation: | (China Institute of Water Resource and Hydmpower Research, Beijing 100048，China) |
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| Abstract: | By taking the upstream catchment area of Tangjiashan Landslide Dam as the study case,a DEM(Digital Elevation Model) based method for extracting river network in catchment and dividing sub-catchments are studied herein,and then a relevant 3-D emergency analysis system is developed on the infrastructure level with OpenGL and.NET.On the basis of this,a series of catchment properties,i.e.the area of catchment,length of backwater,area of backwater,storage capacity,etc.and the characteristics of landslide mass are successfully extracted. |
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| Keywords: | catchment properties geographic information system digital elevation model auto-extraction emergency hydrological event |
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