METHOD AND DEVICE FOR RAPID ANALYSIS OF TUNNEL SECTION CONVERGENCE

摘要

A method for rapid analysis of tunnel section convergence including: S obtaining a three-dimensional point cloud of tunnel structure; S2, fitting a cylinder based on the three-dimensional point cloud of the tunnel structure to obtain a central axis of tunnel point cloud; S3, constructing a plane based on the central axis of the tunnel point cloud and a given point, and intercepting a section of the tunnel point cloud based on the plane; S4, determining a center of the section of the tunnel point cloud; S5, extracting outline point clouds at a fixed angle range on both sides of the section based on the center of the section, and performing circle fitting on the outline point clouds respectively to obtain two outline circles; and S6, carrying out analysis of section convergence according to centers and radii of the outline circles on both sides of the section.