| 摘要 |
PURPOSE:To prevent breakage of a feed pipe even if putty-like resin infiltrating into the branch part of the feed pipe is discharged by means of a compressed air, by a method wherein, after resin is blown against the interior of the feed pipe by means of a low pressure to improve resistance to pressure of the feed pipe, repairy on the conduit side takes place. CONSTITUTION:When repairy of leakage of gas past an existing piping takes place, resin is blown against the interior of a pipe at a low pressure from a blower 52, being a repairing means, connected to each feed pipe 2 to form a coated film to form a first lining. Thereafter, after the interior of the pipe is filled with patty-like resin C through an injection nozzle part 31 from a resin injector 33, with a winch 81 operated, a traction rope 8 is pulled, and the resin C is coated on a pipe wall through traction of a pig 6 to form a thick resin lining layer on the inner surface of a conduit 1. In which case, since the putty- like resin C infiltrate into the branch part of the feed pipe 2 through the conduit 1 by means of a filling pressure, a compressed air is blown into the feed pipe 2 to discharge said resin. |
