基于车载式激光扫描的地铁隧道结构检测  

Metro tunnel structure inspection based on vehicle-mounted laser scanning

作　　者：陈向阳[1] 侯刚栋 潘恺 李成成 CHEN Xiangyang;HOU Gangdong;PAN Kai;LI Chengcheng(School of Civil Engineering and Architecture,Nantong Vocational University,Nantong 226007,China;Geophysical Survey Team of China Coal Geology Administration,Xingtai 054000,China;Shanghai Measuring and Drawing Institute,Shanghai 201100,China)

机构地区：[1]南通职业大学建筑工程学院,江苏南通226007 [2]中国煤炭地质总局物测队,河北邢台054000 [3]上海市测绘院,上海201100

出　　处：《测绘通报》2021年第1期165-168,共4页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(41174002);2019年度南通市市级科技计划(MS12019050)。

摘　　要：本文针对地铁隧道结构检测的基本内容和要求,基于车载式激光扫描技术研究了地铁隧道结构的检测方法。采用车载激光扫描系统采集地铁隧道的点云数据,采用基于RANSAC算法和大小尺度法线算法的组合滤波方法对点云数据进行预处理,通过对隧道点云数据的切片、拟合、展开等处理,计算并分析了地铁隧道的断面变形、收敛值、错台值及渗漏值等。研究结果表明,采用车载式激光扫描技术可以快速地检测和分析地铁隧道结构的形变,适用于地铁隧道结构的定期检测和形变分析。Aiming at the basic content and requirements of metro tunnel structure inspection,based on vehicle-mounted laser scanning technology,this paper studies metro tunnel structure inspection methods. The on-vehicle laser scanning system is used to collect the point cloud data of the subway tunnel. The combined filtering method of the RANSAC algorithm and the scale normal algorithm is used to pre-process the point cloud data. By slicing,fitting and unfolding the point cloud data of the tunnel processing,it calculates and analyzes the cross-section deformation,convergence value,stagger value and leakage value of the subway tunnel. The research results show that the vehicle-mounted laser scanning technology can quickly detect and analyze the deformation of the subway tunnel structure,which is suitable for the regular inspection and deformation analysis of the subway tunnel structure.

关 键 词：地铁隧道结构检测 车载式激光扫描 组合滤波 结构参数计算 

分 类 号：P258[天文地球—测绘科学与技术]