基于多源数据融合的碧流河水库库区地形更新方法及应用

水库库区水下地形复杂,且伴随着冲刷淤积作用,运行数十年后水库库底地形变化较大,已有的地形资料难以真实地反映库底地形,成为水库管理的难点。在研究碧流河水库多源地形数据构建技术的基础上,对水库现有的声呐探测、历史测量图、人工点测量等多种来源数据进行有效融合,实现了水库库底地形的更新重建。结果表明,经该方法更新后的结果能够更准确地反映实际的库区地形,进而重新推求了碧流河水库的水位—库容关系曲线,分析了碧流河水库的淤积量与淤积分布情况。实例表明该方法能够较好地为水库防洪与环境治理提供技术支撑。

Topographic Updating Method and Application of Biliuhe Reservoir Based on Multi-source Data Fusion

With the effect of erosion and siltation, the complex underwater terrain of the reservoir has changed greatly after decades of operation. Therefore, the existing topographic data is hard to reflect the current terrain of the reservoir and become a difficulty in reservoir management. Based on the research of multi-source terrain data fusion technology, this paper updated and reconstructed the Biliuhe reservoir bottom terrain by effectively integrating the existing data of sonar detection, historical measurement map and artificial point measurement. The updated results can accurately reflect the actual reservoir terrain. On the basis of the update bottom terrain, the elevation-capacity curve of the Biliuhe Reservoir is re-evaluated. The total amount of silting and the siltation distribution of the Biliuhe Reservoir are analyzed, which provides technical basis for flood control and environment treatment of reservoir.