REPAIR WORK FOR UNDERGROUND CONDUIT LINE

摘要

PURPOSE:To perform repair work economically and quickly, by providing a lining pig and a substitutional pig in which a resin pig is provided movably in the underground conduit line. CONSTITUTION:A lining pig 2 and a substitutional pig 3 where a resin filling cylinder 4 is provided at the back are couplingly connected and movably provided in an underground conduit line 1 with tracting lanyards 14 and 15. The substitutional pig 3 is positioned to a conduit joint 13. Resin C in the resin filling cylinder 4 is pushed out between the substitutional pig 3 and the lining pig 2 by a piston ring 5. The resin C is filled up into the clearance of the conduit joint 13 through the substitutional pig 3. Lining is performed by applying this resin C with the lining pig 2 in front and at the back of the conduit joint 13.