MEASURING METHOD FOR CONSTRUCTING ACCURACY OF TUNNEL

摘要

PURPOSE: To shorten the measuring time and to improve the measuring accuracy by making the measuring work by a worker within a narrow tunnel unnecessary. ;CONSTITUTION: A running distance sensor 5, a gyro 6, an inclination sensor 4 and a clearance sensor 3 are mounted on a car truck 1 running in a tunnel. The running distance of the car truck 1 from a reference point set in the tunnel is measured by the running distance sensor 5, and the yawing angle is detected by the gyro 6. The rolling angle is measured by the inclination sensor 4 while the distances ai₁, ai₂ from the car truck 1 to the inner wall faces of the tunnel are measured by the clearance sensor 3. The measuring result is sent to an operating device 11 simultaneously at real time, so that the central line of the tunnel is operated.;COPYRIGHT: (C)1993,JPO&Japio