一种确定流域内主河道的方法
By acquiring digital elevation models and calculating flow direction and confluence accumulation grids, combined with river classification methods, and employing a bidirectional parallel search approach, the problem of rapid and accurate location of main channels in massive river network data was solved, improving the efficiency of basin river network digitization and the speed of hydrological model simulation.
CN115964826BActive Publication Date: 2026-07-17CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA INST OF WATER RESOURCES & HYDROPOWER RES
- Filing Date
- 2022-11-15
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies struggle to quickly and accurately extract the main channel of a watershed from massive amounts of river network data.
Method used
By acquiring a digital elevation model, calculating the flow direction grid and the confluence accumulation grid, and combining it with a river classification method, the main channel is determined using a bidirectional parallel search approach.
Benefits of technology
It enables the rapid and accurate extraction of main channels from a vast number of river sections, improving the efficiency of digitizing the river network in the basin and providing technical support for hydrological models.
✦ Generated by Eureka AI based on patent content.
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Figure CN115964826B_ABST
Abstract
本发明公开了一种确定流域内主河道的方法，属于水文学研究技术领域，包括如下步骤：获取流域范围内的数字高程模型，并基于数字高程模型依次得到流向格网、汇流累积量格网和河流格网；将河流格网进行分级，并将河流格网转换为矢量河网，得到线状河网和河网节点属性表；基于流向格网、汇流累积量格网和河网节点属性表，得到若干源头起始点和出水口终止点；基于各源头起始点、各出水口终止点、河网节点属性表和线状河网，完成主河道确定；本发明解决了难以快速并准确在海量河网数据中提取流域的主河道的问题。
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