Repair manner of branching pipe conduit, bag and repair material null for repair

摘要

PROBLEM TO BE SOLVED: To fit a nearly T-shaped repairing member in one body extending from a branch pipe to a main pipe in the vicinity of a branched part, expand it by means of a repairing bag of the nearly same shape by pressure for repairing, and then remove the nearly T-shaped repairing bag used for the repairing. ;SOLUTION: A repairing material 6 constituted so that a nearly T-shaped airtight repairing bag 10 composed of a base part bag 11 and a branch part bag 12 respectively fit for a base part 8 and a branch part 9 is fitted in a nearly T-shaped repairing member 7 composed of the short base part 8 and the branch part 9 branched from the base part 8, is arranged in the branched part 4 and the branch pipe 3 of a branched pipe line, and the repairing bag 10 is expanded so as to stick the repairing member 7 to a main pipe 1 and the branch pipe 3 in pressure contact. Next, by pulling inward both terminal ends of the base part bag 11, the base part bag 11 and then the branch part bag 12 are separated from the repairing member 7 while turning over so as to make the outside into the inside, and the bag 10 is drawn out through the branch pipe 3 so as to be removed.;COPYRIGHT: (C)1997,JPO