| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily remove a decrepit pipe over the total length. SOLUTION: A towing member 4 is inserted in a decrepit pipe 1 from a first pit 2 side to a second pit 3 side, a pipe breaking member 5 for breaking the decrepit pipe 1 at a plurality of parts in the circumferential direction in the pipe axial direction is connected to the end of the towing member 4 on the first pit 2 side, and fragments of the decrepit pipe 1, broken by the pipe breaking member 5 are pressed from the first pit to the second pit and removed.</p> |
