Abstract
This paper proposes the system in which the segments can be conveied from the stock yard to the erector at the rear of the shield machine without manual operation. This system consists of the following components:
1) Battery-operated carriages controlled by the central control unit automatically
2) Automatic segment-stock-rack device
3) Elevator installed in the shaft
4) Segment-supplying device placed at the rear of the shield machine
5) Central control unit and optical fiber communication system
The construction sites that emploied this system resulted in labor-saving and safety in work condition.
