摘要
针对现阶段土地平整工程中土方量计算缺乏足够的高程点以及坡度、坡向图较难获得的问题。论文基于南方CASS9.1软件和ArcGIS10.1软件,提出了一种解决办法即通过南方CASS软件生成等高线,利用ArcGIS软件建立DEM、生成坡度坡向图。本文选取铜川市五联三村土地平整项目区为研究对象,通过对DEM、坡度坡向图分析得出如下结论:项目区总体地势为东高西低、北高南低,从东向西、由北向南逐渐降低;从坡度图中可知坡度为25°以下面积为136 926m^2,占项目区总面积63.32%。由坡向图可知阳坡面积为171 216m^2,占项目区总面积79.18%。结果表明,该方法不仅有效解决了地形图高程点密度不足的问题,而且还满足了田块设计中土方计算的要求。此外,坡度坡向图为设计人员提供了科学、合理的统计数据。
At present,it's difficult to attain enough elevation point,slope and aspect map on topographic map.In order to overcome the weakness above,a new solution is proposed within this paper based on the southern CASS9.1 and ArcGIS10.1 software.Firstly,contours is generated by the south CASS software.Secondly,utilized ArcGIS10.1 software to generate DEM,slope and aspect map.Finally,taking project of Wuliansancun,Tongchuan as an example,Based on the DEM data,we can know that the east is higher than the west and the south is lower than the northern,from east to west gradually decreased,the analysis of slope map showed that below 25°area is 136 926 square meters,accounting for a total area of 63.32%,as can be seen from the aspect map the sunny slopes area is 171 216 square meters,accounting for the project with a total area of 79.18%.The results show that this method not only effectively solve the problem of shortage of the elevation point density,but also meet the requirements of the field in the design of earthwork calculation.In addition,the slope and aspect map delivers the scientific and reasonable statistical data for designers.
