基于三维激光扫描的隧道收敛分析  

Tunnel convergence analysis based on 3D laser scanning

作　　者：刘燕萍[1] 程效军[2] 贾东峰[2] 

机构地区：[1]同济大学浙江学院土木系,浙江嘉兴314051 [2]同济大学土木工程学院测量与国土信息工程系,上海200092

出　　处：《工程勘察》2013年第3期74-77,共4页Geotechnical Investigation & Surveying

摘　　要：快速准确全面地获取对象的空间信息是三维激光扫描技术的特点。本文基于三维激光扫描技术快速地采集盾构隧道的点云数据,并对其分割生成切片,提出一种多点坐标平差计算圆心的方法求取切片圆心和半径,分析隧道的收敛变化。最终通过实例证明了该方法的可行性和准确性。3D laser scanning technology can be used to obtain the spatial information of objects rapidly, precisely and comprehensively. Based on 3D laser scanner, firstly, the point clouds data of shield tunnel is sampled rapidly, then, they serve as the input of segmentation for slice generation, meanwhile, a multipoint coordinate adjustment method is proposed to calculate center and radius of circle which is used as the quantity for convergence change analysis. Finally, one case study has been made to illustrate the feasibility and accuracy of this method.

关 键 词：三维激光扫描 盾构隧道 平差计算 收敛分析 

分 类 号：P234.4[天文地球—摄影测量与遥感]