| 摘要 |
PROBLEM TO BE SOLVED: To provide a manhole repairing structure which is for use in repairing a manhole with good workability by rigidly bonding cylinders together, even if the cylinders are formed of a resin that is poor in adhesiveness such as polyethylene, to thereby save repairing costs. SOLUTION: In formation of the manhole repairing structure, the cylinders 31, 32, 33 formed of polyethylene, polypropylene, or another thermoplastic resin, and each having a semi-welded fiber mat 3c attached to inner peripheral edges thereof, are piled up on each other along an inner wall surface of the manhole 1, and a connecting fiber mat 4 is superposed on the vertically adjoining semi-welded fiber mats from inside. Then a hardening resin is soaked into the connecting fiber mat 4 and the semi-welded fiber mats 3c and then hardened, to thereby form the manhole repairing structure. Further, grout 45 is filled in a gap between the cylinders and the inner wall surface of the manhole. By superposing the connecting fiber mat on the semi-welded fiber mats attached to the inner peripheral edges of each cylinder, and soaking the hardening resin into the fiber mats and then hardening the same, even if the cylinders are formed of the resin including polyethylene, that is poor in adhesiveness, the cylinders are rigidly connected together, and therefore the manhole repairing structure thus formed is available for repairing the manhole. COPYRIGHT: (C)2006,JPO&NCIPI
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