摘要
地铁隧道限界测量成果,直接影响轨道铺设工作的顺利开展。相比传统的测量方法,三维激光扫描仪技术具有数据获取的全面性、外业作业的低强度及高效性等特点。本文结合长沙市轨道交通5号线一期工程的实践案例,详细介绍了利用三维激光扫描仪技术进行地铁隧道限界测量的外业扫描作业、点云数据处理、限界测量成果提取要求和方法,通过与传统方法相比,说明了该方法的优越性,可供类似项目参考应用。
The measurement results of metro tunnel clearance directly affect the smooth development of track laying.Compared with traditional measurement methods,3D laser scanner technology has the characteristics of comprehensive data acquisition,low intensity and high efficiency of field work.Based on the practical case of Changsha rail transit line 5 phase I project,this paper introduces the requirements and methods of field scanning in detail,point cloud data processing and clearance measurement results extraction of metro tunnel clearance measurement by using 3D laser scanner technology.Compared with the traditional methods,the advantages of this method are illustrated,which can be used for reference in similar projects.
作者
王凡平
匡志威
刘鹏程
胡艳冬
Wang Fanping;Kuang Zhiwei;Liu Pengcheng;Hu Yandong(Changsha Planning Survey & Investigation & Design Institute,Changsha 410007,China)
出处
《城市勘测》
2020年第3期117-121,共5页
Urban Geotechnical Investigation & Surveying
关键词
三维激光扫描
地铁隧道
标靶法
后方交会法
限界测量
three-dimensional laser scanning
subway tunnel
target method
resection method
gauge measurement
