MANAGEMENT METHOD OF TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide the management method of a tunnel capable of analyzing as to which point of the point group is a form of an object to be desired to be modeled by excluding noise and abnormal measurement value as a deviation value from design data and enabling the analysis in a practical time without inviting the increase of the number of trials by fitting the measurement data to the modeling graphic so as to exclude the effect of noise and the like effectively.SOLUTION: A method for managing a tunnel using a grasping method of a tunnel inner hollow space shape measures the inner hollow wall surface of the tunnel using a 3D laser scanner, and subjects point group data obtained by the measurement to a process approximating a basic plane view against the shape data of a part of the inner hollow wall surface of the tunnel by excluding noise and a deviation value using a RANSAC (Random Sampling Consensus), and estimates the point group data as the shape data of the inner hallow wall surface of the tunnel.SELECTED DRAWING: Figure 1