CAJ | 학술논문

在基于DEM遍历进行淹没分析基础上，提出了基于流域范围约束的DEM遍历算法，减少DEM遍历阶数，以提高计算速度。同时，将算法付诸于代码实现，在算例中与全局遍历进行对比测试。其对比结果表明，基于流域DEM遍历的淹没分析算法速度更快，计算结果可信。在大数据量条件下，速度优势更为明显，而在流域特征显著的地形条件下，计算结果精度高，与全局遍历结果基本一致。本文所研究的基于流域DEM遍历算法使得淹没分析更高效，对水文水力的研究与生产提供了捷径。
재기우DEM편력진행엄몰분석기출상，제출료기우류역범위약속적DEM편력산법，감소DEM편력계수，이제고계산속도。동시，장산법부제우대마실현，재산례중여전국편력진행대비측시。기대비결과표명，기우류역DEM편력적엄몰분석산법속도경쾌，계산결과가신。재대수거량조건하，속도우세경위명현，이재류역특정현저적지형조건하，계산결과정도고，여전국편력결과기본일치。본문소연구적기우류역DEM편력산법사득엄몰분석경고효，대수문수력적연구여생산제공료첩경。
Underpinned by the inundation analysis based on DEM traversal, this paper puts forward the DEM traversing algorithm based on watershed range restrictions, reduces DEM traversal order number in order to improve the calculation speed. At the same time, source codes are written to realize the algorithm and tested to compare the proposed algorithm with global traversal algorithm. The resuhs of the comparison show that the inundation analysis algorithm based on Dem watershed traversal is faster in calculation,its re- sults are reliable and its advantage in speed is obvious when processing large amount of data. Under the condition of prominent watershed topographical features, the calculation results of the proposed algorithm are high in precision and correspond with that of global traversal algorithm. DEM traversal algorithm based on watershed range put forward in this paper makes the inundation analysis more efficient,providing a shortcut for hydrological research and production.