摘要
针对三维激光扫描技术应用于隧道变形监测时无法准确确定隧道形变的问题,该文提出了一种基于参考基准的隧道点云降维格网化形变分析法,通过建立参考基准,计算点云到参考基准的距离,点云降维,生成降维点云到参考基准距离的分布格网图,并进行多期数据差值计算,获得隧道整体变形量值分布图。实验表明,该方法能够确定隧道变形区域和变形量值大小,能够进行多期监测数据的准确对比,提高了三维激光扫描技术的应用精度,是一种实用和有效的衡量隧道变形新方法。
In view of the problem that the tunnel deformation cannot be accurately determined when the 3 D laser scanning technology is applied to the tunnel deformation monitoring,this paper proposed a method for analyzing the deformation of a point cloud based on a reference datum in a grid-based deformation analysis.By establishing a reference datum,the distance between the point cloud and the reference datum was calculated.Distribute the grid map,and calculate the data difference of multiple periods to obtain the distribution map of the overall deformation value of the tunnel.Experiments showed that the method could determine the tunnel deformation area and the magnitude of the deformation,accurately compare the multi-phase monitoring data,improve the application accuracy of the 3 D laser scanning technology,and was a practical and effective method to measure the tunnel deformation.
作者
赵强
王涛
ZHAO Qiang;WANG Tao(Faculty of Environmental and Surveying Engineering,Suzhou University,Suzhou,Anhui 234000,China;School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China)
出处
《测绘科学》
CSCD
北大核心
2021年第2期99-105,共7页
Science of Surveying and Mapping
基金
安徽省教育厅教研项目(2018jyxm0217)
安徽省高校优秀拔尖人才培育项目(gxgnfx2018051)
教育部产学合作协同育人项目(201802201036)。
关键词
点云
三维激光扫描技术
隧道
格网化
参考基准
整体变形分析
point cloud
3D laser scanning technology
tunnel
gridding
reference datum
overall deformation analysis
