摘要
传统的全站仪或RTK技术进行土石方的填挖计算,需要耗费大量的人力和物力,而且效率较低,成本相对较高。该研究利用消费级无人机快速进行土石方计算,通过低空无人机获取影像,利用少量像控点,依据计算机视觉原理生成了地形稠密三维点云,实现了露天地形三维数字模型制作。该研究区域选择了某块有起伏的地形进行试验,利用RTK采集地形高程点进行精度对比。试验的结果表明:利用无人机构建的露天地形三维数字模型计算的挖填石土方量误差在3%以内,完全满足工程中土石方量计算标准,该技术方法具有很高的实用价值。
The calculation of earth-rock filling and excavation by the traditional total station or RTK technology needs a lot of manpower and material resources,and has relatively low efficiency and relatively high costs.This study uses the consumer-grade UAV for the rapid earth-rock calculation,uses the low-altitude UAV to obtain images,generates a dense three-dimensional point cloud of terrain based on the principle of computer vision by a small number of image control points,and makes the three-dimensional digital model of open-air terrain.For the study area,a undulating piece of terrain is selected for the test,and RTK is used to collect the elevation points of the ter‐rain for precision comparison.The test results show that the error of earth-rock excavation and filling volume cal‐culated by the three-dimensional digital model of open-air terrain built by UAVs is within 3%,which fully meets the calculation standard of earth-rock volume in the project.This technical method has high practical value.
作者
贺艳花
HE Yanhua(Guizhou Qianmei Surveying and Mapping Engineering Institute,Guiyang,Guizhou Province,550000 China)
出处
《科技资讯》
2023年第20期106-109,共4页
Science & Technology Information
