摘要
本文选取巴中市巴州区某镇土地整理项目作为研究对象,首先利用一个典型区域的数字化等高线插值生成规则格网DEM,然后利用DEM进行土地平整土方量的计算、道路和渠系的纵断面提取以及由DEM自动提取水系等。由DEM进行以上信息的提取时,主要利用MapGIS软件的DTM分析模块和ArcGIS水文分析工具。本文将DEM与土地整理项目有机结合,在计算精度和计算效率上比以前的方法均有所提高,但由于受原始地形图精度和软件的影响,DEM的精度尚需提高,计算方法尚需进一步的改进。
The use of DEM in land arrangement is studied in this paper.One town in BaZhou, BaZhong City is selected as experimental area.In the first step DEM is produced by interpolation of contour lines.The calculations of excavation volume, profiles of road and drainage canal are extracted from DEM automatically by business software MapGIS and Hydrology tools of ArcGIS.The employment of DEM improves the accuracy and efficiency of engineering problems in land arrangement.However the accuracy of DEM and the method of calculation need to be improved because the source topographical map has limited accuracy.
出处
《测绘科学》
CSCD
北大核心
2008年第1期170-172,251,共3页
Science of Surveying and Mapping
关键词
DEM
土方量
路渠纵断面
水文分析
DEM
excavation volume
profiles of road and drainage canal
hydrology analyst
