基于航空遥感数据的地形变化分析

Analysis of the Terrain Changes Based on Airborne Remote Sensing Data

基于2010年、2016年ADS80/100数据,采用DEM与DOM相结合的方式对兰州生态文化创新城进行了地形变化分析,包括土石方量分析、坡度分析、规划对比和建设用地适宜性分析。结果表明,截至2016年7月研究区内共完成土石方总量为0.102 km^3,基本符合规划要求,可为工程管理核算土石方量提供参考。坡度变化分析表明研究区经平整后从山地、坡地转变为不同标高的平地,地貌总体趋于平缓。建设用地适宜性分析表明研究区大部分位于工程建设适宜区和较适宜区,对于在适宜性较差区域上的建筑需要长期开展沉降监测。

Based on ADS80/100 data in 2010 and 2016, we used the "DEM + DOM" method to analyze the topographic changes of the Lanzhou ecological culture innovation city. The main contents included the earthwork volume analysis, the slope change analysis, the planning comparison and the suitability analysis of construction land. The conclusion shows that as of July 2016, the total amount of earthwork volume in the study area is 0.102 km^3, basically meeting the planning requirements, which can provide a reference for engineering management to account for the amount of earthwork volume. The slope change analysis shows that the study area changes from mountain and slope to flat land with different elevation, and the overall geomorphology tends to be gentle. The suitability analysis of construction land shows that most area are in the suitable area and more suitable area of construction land. The buildings on the poor suitability area need to carry out long-term monitoring of the subsidence.