基于DEM法的变电站工程土方量计算方法研究

摘要

土方工程是影响变电站土建项目成本的重要因素,基于DEM法的土方量计算方法是当前土方量计算的一种重要方法,利用DEM法基本原理对计算软件的二次开发及软件的适应性研究是DEM法广泛利用的重要途径.为了验证DEM法在变电站土方量计算方面的可行性,在HTCAD和ArcGIS软件技术平台上,利用DEM法计算不同地形条件下的变电站土方量并对比分析其计算结果.结果表明:两类软件技术平台在计算土方量方面均具有适用性;DEM法在山区计算的土方量结果相关系数为0.99,计算精度最高,但在平原地区仍具有适用性.%Earthwork volume calculation is an important factor which affects the cost of transformer substation.Earthwork volume calculation based on DEM is currently an important calculation method.The secondary development and adaptability of calculation software by the basic principle of DEM is the important methods to better use DEM.In order to verify the feasibility of the DEM method in transformer substation caculation,earthwork volume calculation of transformer substations in different terrain conditions were calculated respectively and analysed by using the softwares of HTCAD and ArcGIS in this study.The results show that the above two platforms of software are all adaptive to calculate earthwork volume.The method of DEM is more feasible for the earthwork volume calculation of transformer substations in the mountainous area.The correlation coefficient is 0.99 and the accuracy is highest.Thus the DEM method is still adaptive in the plain area.