Regeneration manner and its device null of the obsolete tube in the underground embedding

摘要

PURPOSE:To open an effective communicating hole by a method wherein a plug body is mounted to the inner side of a branch part between a mounting pipe and an existing pipe, a regenerating pipe is disposed, a filler is injected, and after curing, a fine hole is bored through the plug body, the filler, and the regenerated pipe. CONSTITUTION:In a method in which the obsolete part of an existing pipe 1 embedded in a ground is regenerated, a plug body 5 is mounted from the interior of the existing pipe 1 to the inner side of 1 branch part between a mounting pipe 3, branched from the existing pipe 1. A small regenerating pipe 6 is mounted to the interior of the existing pipe 1 with a small gap therebetween, and the gap between the existing pipe 1 and the regenerating pipe 6 is filled with a liquid back filling filler 8. After the filler 8 is cured, a boring device 10 is inserted through the mounting pipe 8, and the plug body 5, the filler 8, the regenerating pipe 6, and a fine hole 23 are bored by means of a center drill 11. The fine hole 23 is increased in diameter to form a communicating hole. As a result, even when the mounting pipe is installed in an eccentric state, the effective communicating hole can be formed.