| 摘要 |
PURPOSE:To make it possible to automatically measure the position of a succeeding truck of a shield machine along a straight line and curved line of a tunnel without the need for turning work. CONSTITUTION:Positions of a truck 5 are determined by an ordinary measuring method. As the machine 3 excavates and moves forward, the truck 5 also moves. At every predetermined time interval, horizontal angle thetag is measured by a gyrocompass 7; mileage L is measured by a traveling distance meter 9; pitching angle thetap of the truck 5 by an inclinometer 13. By using these values, the position of the truck 5 is calculated. At a given time, the position of the truck 5 is remeasured to correct the position coordinates of the truck 5. |
