Tunnel cross section measurement method using a three-dimensional laser scanner

摘要

PROBLEM TO BE SOLVED: To facilitate measurement of a cross section and evaluation and management on an excavation cross section and a lining cross section without making work in one cycle of tunnel excavation construction complicated, and to achieve shortening of a construction period and improvement in construction precision.;SOLUTION: A tunnel cross-section measurement method using a three-dimensional laser scanner includes: fixing a plurality of targets in a tunnel and making a laser scan so as to measure a tunnel cross section in terms of scan coordinates based upon origin coordinates of the three-dimensional laser scanner; recognizing the targets from data absence of scan coordinates and acquiring tunnel coordinates of the respective targets on the basis of a pattern of the data absence; and converting scan coordinates of the tunnel cross section into tunnel coordinates on the basis of the scan coordinates of the respective targets and the tunnel coordinates.;COPYRIGHT: (C)2014,JPO&INPIT