工程土方量计算中土方量精度与DEM分辨率的关系

The Relationship between the Earthwork Volume Accuracy and DEM Resolution in the Calculation of Earthwork Volume

利用规则格网DEM模型模拟地形曲面,得到了用格网间距表示的土方量精度的数学模型,以某一试验区域为例得到了土方量精度随DEM分辨率的变化曲线图。

By using the regular grid DEM model to simulate the topographic hood face, this paper obtains the mathematical model of earthwork volume accuracy expressed by the grid interval, and taking a certain test area as the example, obtains the graph of the earthwork volume accuracy changing with the DEM resolution.