| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water cut-off method for an attached pipe opening, achieving complete water cut-off performance, by surely putting a sleeve in close contact with the attached pipe in work for forming the attached pipe opening of a regenerated pipe for lining a main embedded pipe, where a through- hole is formed in a connection portion of the main embedded pipe to the attached pipe and forcibly expanded at its the peripheral edge toward the inside of the attached pipe, to form the attached pipe opening integrally with the sleeve. SOLUTION: The water cut-off method for the attached pipe opening of the regenerated pipe comprises inserting an approximately cylindrical water cut-off member 4A for holding a sealing agent 43 consisting of soft resin into the connection portion of the attached pipe 2 connected to the main embedded pipe 1 at the side of the main embedded pipe 1, before inserting the regenerated pipe 3 into the main embedded pipe 1, and putting the outer face of the sleeve 33 formed, by forcibly expanding the regenerated pipe 3 in close contact with the inner face of the attached pipe 2 via the water cut-off member 4A.</p> |
