| 摘要 |
PURPOSE:To facilitate detecting and drilling work for a branch pipe opening by providing a process for verifying the position of the branch pipe opening of a reclaimed pipe and a process for drilling a portion facing to the branch pipe opening of the reclaimed pipe from the inside of the reclaimed pipe. CONSTITUTION:Lining is carried out by inserting a reclaimed pipe B into an existing pipe A with a branch pipe C. Next, a perceptive substance mixing solution 1 is poured from a branch pipe C side. By traveling a detector 2 inside the reclaimed pipe B, the perception substance mixing solution 1 is detected to verify the branch pipe opening. Then the portion facing to the branch pipe opening of the reclaimed pipe A is drilled from the inside of the reclaimed pipe A. It is thus possible to carry out the detecting and drilling work for the branch pipe opening easily together after lining process. |
