| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipeline laying method capable of surely lifting the end part of a carrying-in pipe, and capable of preventing the end part of the carrying-in pipe from dropping unexpectedly.SOLUTION: A carrying-in pipe 11 of a connection object is carried in a sheath pipe 1 by a truck 18, one end part of the carrying-in pipe 11 of the connection object is temporarily connected to an existing carrying-in pipe 11 laid in the sheath pipe 1, a pipe end lifting device 27 having a flexible pressing part 30 is mounted to the other end part of the carrying-in pipe 11 of the connection object, the pressing 30 is elongated, and the inner surface of the sheath pipe 1 is pressed by the pressing part 30. Consequently, the other end part of the carrying-in pipe 11 of the connection object is lifted from the truck 18, and the truck 18 is extracted from the lower part of the carrying-in pipe 11 of the connection object. |
