摘要
Abstract
Due to the disaster prevention air supply and smoke exhaust passage,there are many deviations in the construction of the middle separation wall and evacuation passage(due to on-site positioning,pouring formwork,etc.),and there is serious fog in the tunnel(the distance between the control points is far apart,unable to orient).The surface of the internal structure is wet(laser can not be reflected)and many other factors,so the cross-section data collection can not be realized by using conventional total station single-point measurement.Based on the three-dimensional laser scanning technology,the large-diameter shield single-hole,double-line,horseshoe-shaped tunnel section processing technology,this paper proposes using three-dimensional laser scanner to obtain the massive point cloud data of the second lining structure,with the help of the integration of cyclone,HDS,CAD processing methods,so as to analyze the tunnel cross-section deformation,tunnel convergence,construction deviation and so on.关键词
三维激光/海量点云/多手段融合/单洞双线/中隔墙Key words
3D laser/massive point cloud/multi-means fusion/single hole and double line/partition wall分类
交通工程
