GeoSLAM手持移动式三维激光扫描仪在铁路勘测中的应用  

Application of Handheld Mobile 3D Laser Scanner Based on GeoSLAM in Railway Survey

作　　者：徐培云 XU Peiyu(China Railway Siyuan Survey and Design Institute Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道勘察》2024年第3期64-68,共5页Railway Investigation and Surveying

基　　金：中铁第四勘察设计院集团有限公司科研项目重点课题(2022K143)。

摘　　要：在铁路勘测设计过程中,部分工点易受树木遮挡影响,为了能够更加高效、精确地获取这些工点区域地形,将基于GeoSLAM的移动式三维激光扫描仪引入铁路勘测工作中,通过对比传统测量手段的数据采集效率和采集精度,分析GeoSLAM的移动式三维激光扫描技术针对不同工点的适用性,并对采集路线规划、点云匹配控制点布设方案和外业采集流程进行分析,总结出一套基于GeoSLAM移动式三维激光扫描仪数据采集的技术体系。研究表明,相较于传统测量技术手段,GeoSLAM移动式三维激光扫描技术能够实现“一次采集、应采尽采”,无需反复作业,激光点云数据精度可满足铁路勘测工点地形图制图的精度要求。At present,in the process of railway survey and design,some working points are affected by GNSS signal in order to obtain the terrain of these station areas more efficiently and accurately,this paper introduced the mobile 3D laser scanner based on GeoSLAM into the railway survey work.By comparing the data acquisition efficiency and accuracy of traditional measurement means,the experimental data of different stations such as Bridges,towers and houses are used,and the cartographic accuracy requirements of station topographic maps were referred to.The accuracy of the experimental data was verified,the applicability of GeoSLAM mobile 3D laser scanning technology for different work points was analyzed,and a set of technical system for data acquisition based on GeoSLAM mobile 3D laser scanner was summarized by discussing and analyzing the acquisition route planning,the layout scheme of point cloud matching control points and the field acquisition process.The results show that compared with traditional measurement techniques,GeoSLAM mobile 3D laser scanning technology can achieve“one acquisition,should be fully mined”,without repeated operations,laser point cloud data accuracy can fully meet the accuracy requirements of railway survey site topographic map mapping.

关 键 词：GeoSLAM技术 三维激光扫描仪 点云数据 铁路勘测 地形图 

分 类 号：U212[交通运输工程—道路与铁道工程] U237