基于GIS的场地平整技术研究

场地平整是工程建设中先行的步骤,通过GIS软件的三维分析模块、地统计分析模块能精确有效地分析目标平整场地所需挖填的土方量及其分布位置。文章总结了在场地平整施工设计方法的基础上,探讨GIS技术中的数字地形分析在常规工程测量作业中的优势,研究以成都植物园作为平整设计的假设,基于ArcGIS软件平台对高程点测量数据构建TIN,并对TIN进行修正以反映真实地形特征,通过TIN转化得来的DEM格网与设计最优高程拟合曲面进行栅格数据运算得出挖填土方量。

A Study of Ground Leveling Based on GIS

Ground leveling is the first step in building projects.Through the GIS software,the three-dimensional analysis module and the statistical analysis module can accurately and effectively calculate the required earthwork and analyze its distribution of target ground.Based on GIS technology,the advantages of DEM(Digital Elevation Model) digital terrain analysis in the conventional project measurement are fully discussed.Based on reviewing the ground leveling methods in the engineering design,taking Chengdu Botanical Garden as an example,the TIN(Triangulated Irregular Network) is constructed by ArcGIS software platform through using the elevation point data,and it is modified to reflect the real terrain features.The earthwork is finally calculated from raster data through the grid DEM transformed by TIN and surface fitting of the optimal height.