CUT-OFF SEAL PROTECTION STRUCTURE OF LATERAL PORT

摘要

PROBLEM TO BE SOLVED: To provide a cut-off structure of a lateral port preventing peeling of a cut-off seal around the lateral port for leading a rehabilitation pipe to a buried main and capable of obtaining a cu-off structure in the lateral port by the cut-off seal. SOLUTION: The cut-off seal 6 is provided around the lateral port 31 in the upper surface of the buried main 3. When the inside of the buried main is to be lined by the rehabilitation pipe 1, the rehabilitation pipe is lead toward a downstream side manhole side from the upstream side manhole side by the traction force of a wire 54 inside the buried main. The tip of the wire is locked in a position deviated upward, so as to downward operate the traction force of the wire to the cover member 53 covering the lead side end of the rehabilitation pipe.