Peripheral edge sealing method and the peripheral portion sealing structure of the perforated portion formed in rehabilitating pipe

摘要

PROBLEM TO BE SOLVED: To provide a method of encapsulating a peripheral edge and a structure of encapsulating the peripheral edge by which a peripheral edge of a boring part formed at a regeneration pipe and a base end edge of a branch part are in close contact to perform an easy and reliable cutoff.;SOLUTION: An existing pipe 20 of a repairing pipe 10 is provided with a diversion branch part 23, a part of a regeneration pipe 30 to be aligned with the branch part 23 is formed with a boring part, a ring-like seal body 40 for sealing the peripheral edge of the boring part formed at the regeneration pipe 30 is fed from one end opening of the regeneration pipe 30, and the seal body 40 is arranged near the boring part in the regeneration pipe. On the other hand, a cylindrical holding body 50 forming a branch path is inserted from the upper end opening into the branch part, a holding body 50 is supported by the branch part 23, the seal body 40 is connected and held in its outer fitted state to the edge of the holding body 50, the peripheral edge of the seal body 40 is pushed against the peripheral edge of the boring part through the holding part 50, whereby the peripheral edge part of the boring part and the base end edge of the branch part 23 are in close contact with each other to cutoff water, and then a main flow path formed within the regeneration pipe 30 and the branch flow path formed within the holding body 50 are communicated to each other.;COPYRIGHT: (C)2014,JPO&INPIT