| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipeline regeneration method which can fix a regenerated pipe by injecting a filling material into a clearance between an internal face of an existing pipe and an external face of the regenerated pipe without installing a spacer to the existing pipe in advance, and can prevent the float of the regenerated pipe caused by the filling material.SOLUTION: In a pipeline regeneration method, the regenerated pipe 102 is arranged in the existing pipe 100 so that the clearance 50 is formed between the internal face of the existing pipe 100 and the external face of the regenerated pipe 102, and thereafter, in this state, an expansible body 60 in a contracted state is introduced into the space 50. Next, the expansible body 60 is expanded, and the regenerated pipe 102 is pushed against the bottom of the existing pipe 100. Then, in this state, the filling material 104 is injected into a lower portion of an air space between the internal face of the existing pipe 100 and the external face of the regenerated pipe 102 from the clearance 50 by using a filling material injection hose 64. After the filling material 104 is solidified, the expansible body 60 is contracted, and drawn out of the clearance 50. |
