| 摘要 |
<p>PROBLEM TO BE SOLVED: To convey a corresponding bent pipe body in a tunnel as contact with the inner wall surface of a tunnel and an obstacle is avoided, and dispose the bent pipe body therein. SOLUTION: In such a state that the tip of a short straight pipe P2 of which a bent pipe body consists is pointed to the side, where an inner surface space is wide, of the tunnel, a long straight pipe P1 is placed on a carrier truck 1 and conveyed to the corresponding curved part of the tunnel. Through conveyance to the corresponding curved part, the long straight pipe P1 placed on the carrier truck 1 is rotated around an axis through a roller 4 and regulation is effected so as extend along the corresponding curved part.</p> |
