TUNNEL MEASUREMENT AND CONTROL METHOD BASED ON COMBINATION OF THREE-DIMENSIONAL LASER SCANNER AND BIM

摘要

#$%^&*AU2020100893A420200709.pdf#####ABSTRACT The present invention discloses a tunnel measurement and control method based on a combination of a three-dimensional laser scanner and a BIM, comprising: conducting three-dimensional point cloud scanning in a tunnel at each stage to obtain point cloud data; splicing, denoising and coloring the point cloud data by using professional point cloud software to obtain optimized point cloud data models at various stages; building a tunnel structure model by using BIM parametric modeling software; importing the point cloud data models and the tunnel structure model into third-party visualization software for comparison and analysis, and simultaneously realizing monitoring and advanced pre-control through cross section analysis. The present invention solves the difficult problems of a traditional tunnel measurement and control mode and realizes efficient and accurate measurement and control for tunnel over-excavation and under-excavation, secondary lining thickness and structural deviation.1/1 S1. Scanning in a tunnel by using a three-dimensional laser scanner to obtain point cloud data S2. Processing through professional point cloud software to obtain point cloud models S3. Building a tunnel structure model by using BIM software S4. Importing into third-party visualization software for comparison, and realizing monitonng and advanced pre-control through cross section analysis FIG. 1