| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pipe pull-out method for positively pulling out a pipeline to be pulled out over the whole length. SOLUTION: In a method of pulling out an existing pipe 1 buried in the ground, a rod member 2 provided with radially advancing/retreating diameter enlarged parts 2A in a part or more places in an extended direction is inserted in the existing pipe 1. In the state of the diameter enlarged parts 2A of the rod member 2 being brought into pressure contact with the inner surface of the existing pipe 1, the rod member 2 is pulled, so that the existing pipe 1 and the diameter enlarged parts 2A are frictionally engaged to pull out the existing pipe 1.</p> |
