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本文论述了采用定向数字高程模型方式构建水下数字高程模型和通过三棱柱法精密计算水库库容的计算原理。本次采用的测量与计算方法与以往手工相比精度更高、成果更细致,为水库的调度、库淤分析和及时掌握水库库区的存水量提供了真实可靠基础数据。
This paper discusses the calculation principle of constructing digital elevation model of underwater using directional digital elevation model and calculating the reservoir capacity by the method of triangular prism. The measurement and calculation methods used in this study have higher accuracy and more detailed results compared with the previous manuals, providing real and reliable basic data for reservoir dispatching, siltation analysis and timely grasping the water storage in the reservoir area.