土木工程土石方量计算方法及应用

方格网法、断面法、等高线法是工程建设中常用的土石方量计算方法。随着计算机技术和绘图软件的发展，利用数字高程模型（DEM）可采用类似于体积积分的方法来计算挖填工程量，逐步取代传统的手工计算，大大提高了工作效率。文章利用GIS软件Mapinfo对空间数据进行分析与查询，构造DEM，并结合Surfer8．0的曲面建模功能，实现土方工程量的计算，并通过试验加以验证。

Calculation of Earthwork Volume in Civil Engineering

Transect, Table, Contours are the main methods used for earthwork calculation in civil engineering. With the development of computer and drawing software, a new method based on Digital Elevation Model was introduced, which has been transformed to a computer program with calculating DEM volume. Here, MapInfo was used to analyze and obtain the 3D space data and to construct Digital Elevation Model. Combined with the surface modeling and earthwork volume calculation function of Surfer 8, earthwork volume can be obtained. The result shows that the method on DEM is effective and practical.