基于惯导和CPⅢ控制点的地铁隧道移动激光扫描三维点云重建  

A mobile laser scanning 3D point cloud reconstruction for metro tunnels based on inertial navigation and CPⅢ control points

作　　者：丁孝兵 高志强 杨坤 DING Xiaobing;GAO Zhiqiang;YANG Kun(Foshan Serveying Mapping and Geoinformation Research Institute,Foshan 528000,China;SGIDI Engineering Consulting(Group)Co.,Ltd.,Shanghai 200093,China)

机构地区：[1]佛山市测绘地理信息研究院,广东佛山528000 [2]上海勘察设计研究院(集团)有限公司,上海200093

出　　处：《测绘通报》2021年第9期112-115,129,共5页Bulletin of Surveying and Mapping

摘　　要：地铁隧道初始运营前,需要对隧道的施工质量和零状态进行检测,传统方法采用全站仪测量隧道的特征点及断面,工作量大、效率低、成果单一。针对上述问题,本文提出了基于惯导和CPⅢ控制点的地铁隧道移动扫描三维点云重建方法,并验证了隧道断面点云、中轴线及轨道中心位置成果精度,满足隧道规划验收测量要求。同时,该方法可同步获得隧道的水平直径、管壁影像、纵断面图及横断面图等成果,既提高了作业效率,其测量成果又可作为轨道交通结构的零状态档案,为地铁隧道规划验收测量及后期运营维护提供翔实的基础资料。Before the initial operation of metro tunnels, the construction quality and zero-state of tunnels need to be inspected. The traditional method uses a total station to measure feature points and sections of tunnel, which is heavy-workload, low-efficiency and single-result.To solve the above problems, this paper proposes a mobile laser scanning 3 D point cloud reconstruction method for metro tunnels based on inertial navigation and CPⅢ control points, and then verifies the accuracy of point cloud of tunnel section, central axis and track centers, which meets the requirements of tunnel planning acceptance measurement. At the same time, this method can simultaneously obtain the horizontal diameter, pipe wall image, vertical section and cross section of the tunnel, which not only improves the operation efficiency, but also can be used as the zero state file of rail transit structure, so as to provide detailed basic data for metro tunnel tunnel planning acceptance measurement and later operation and maintenance.

关 键 词：地铁隧道 移动激光扫描 惯导 规划验收测量 三维点云 

分 类 号：P23[天文地球—摄影测量与遥感]