基于DEM数据的水库集水区提取及库容分析  

Extraction of reservoir catchment area and storage capacity analysis based on DEM data

作　　者：贾程程 王长明 JIA Chengcheng;WANG Changming(China Water Huaihe Planning,Design and Research Co.,Ltd.,Hefei 233001,China)

机构地区：[1]中水淮河规划设计研究有限公司,安徽合肥233001

出　　处：《水利信息化》2025年第1期65-68,74,共5页Water Resources Informatization

摘　　要：为支撑水库工程设计与规划,选取龙山水库为研究对象,优化水库库容曲线绘制方法,利用实测高程数据构建高分辨率的DEM,结合ArcGIS平台的水文分析工具,系统分析不同阈值与河网提取之间的关系,确定合理阈值并生成水库的集水区范围。利用ArcGIS中的表面体积工具及模型构建器,批量计算龙山水库的水位、库容、面积数据,实现高效、精确的数据处理。通过与水库原库容曲线对比验证,结果显示模型计算数据具有较高的可靠性,该方法有效,不仅能够准确绘制水库库容曲线,还可为水库的规划设计、调度管理及防洪抗旱提供重要的技术支持。To support reservoir engineering design and planning,this study selected the Longshan Reservoir as the research subject and optimized the method for delineating reservoir storage capacity curves.A high-resolution Digital Elevation Model(DEM)was constructed using measured elevation data.By integrating hydrological analysis tools within the ArcGIS platform,a systematic analysis was conducted to explore the relationship between different thresholds and river network extraction,ultimately determining an appropriate threshold and delineating the reservoir’s catchment area.The surface volume tool and model builder in ArcGIS were employed to perform batch calculations of the water level-storage capacity-surface area data for the Longshan Reservoir,enabling efficient and precise data processing.Comparative validation with the original reservoir storage capacity curve demonstrated high reliability of the model-calculated data,confirming the effectiveness of the proposed method.The study indicates that this approach not only accurately delineates reservoir storage capacity curves but also provides essential technical support for reservoir planning,operation,flood control,and drought mitigation.

关 键 词：集水区提取 库容分析 DEM 阈值 水文分析 ARCGIS 

分 类 号：TV697.2[水利工程—水利水电工程]