隧道激光三维扫描监控量测数据处理方法研究

Research on Data Processing Method of Tunnel Laser 3D Scanning Monitoring Measurement

传统的隧道监控量测存在监测点数量少、效率低、成本高的特点。激光三维扫描能采集到隧道初期支护表面密集的点云,为监测隧道任意表面的变形情况提供可能。但目前计算机运算能力难以处理所有采集到的每一个监测点,需要对点云进行抽稀。由于初期支护表面不光滑,采用常规技术进行抽稀后的点云用于隧道变形分析会极大程度降低监测精度。本文介绍一种隧道激光三维扫描监控量测数据处理方法,解决了常规点云抽稀方法降低监测精度的难题,使激光三维扫描技术应用到隧道施工阶段,具有重要的理论意义和工程实际意义。

The traditional tunnel monitoring measurement has the characteristics of small number of monitoring points,low efficiency and high cost.The dense point cloud on the initial support surface of tunnel can be collected by laser 3D scanning,which provides the possibility for monitoring the deformation of any surface of the tunnel.However,it is difficult to deal with all the monitoring points by computer operation at present.The point cloud needs to be rarefied.Because the surface of the initial support is not smooth,the point cloud needs to be rarefied by conventional technology,the application of the rarefied point cloud to tunnel deformation analysis will greatly reduce the monitoring accuracy.This paper introduces the data processing method of tunnel laser 3D scanning monitoring measurement,which solves the problem of reducing the monitoring measurement data by conventional point cloud rarefaction method,it is possible to apply the laser 3D scanning technology to the tunnel construction,which is of important theoretical and practical significance.