MEASUREMENT METHOD FOR TUNNEL SURFACE BY LASER SCANNING

摘要

A measurement method for a tunnel surface by laser scanning is provided to enable a user to accurately know a scanning portion by scanning a viewing beam through a pointer installed at a head body of a laser scanner. A measurement method for a tunnel surface by laser scanning includes the steps of: installing a laser scanner at the bottom of a tunnel(S10); measuring more than 4 reference points of the inner surface of the tunnel(S20); performing a position scan in a state in which the laser scanner is rotated at 90 degrees with respect to a tunnel axis(S30); performing a surface scan in a state in which the laser scanner and the tunnel axis coincide with each other(S40); recognizing the installation position of the laser scanner by processing data obtained through the reference point measurement and position scan(S50); and embodying an image and superficial data about the inner surface of the tunnel by processing the data obtained through the surface scan(S60).