| 摘要 |
<p>PROBLEM TO BE SOLVED: To carry out the laying work of a pipe in a ditch, when a gas pipe, a pipe of water supply, sewerage, or the like is buried underground, without requiring a wide working area, and easily with a small number of workers. SOLUTION: Plural pipes 9 are connected beforehand on the ground in the upstream or the downstream in the pipe burying direction, then a ditch 10 with the length allowable to bury the connected pipes 9 is dug, then the connected pipes 9 are hung up by a crane device 5 which can hang up by striding the connected pipes, and they are carried on the ditch 10, and hung down and buried in the ditch 10.</p> |
