| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manhole repairing method ensuring a uniform and consistent adhesion of a repair sheet impregnated with a photo-curable resin onto a wall surface of a manhole for repair. <P>SOLUTION: After a repair sheet 15 is applied by a hand roller to a wall surface 12 of a man hole 11, transparent annular air expansion tubes 16, 16a with a built-in annular light illuminating unit 21 having a plurality of lamps 22 are successively stacked up from the bottom part toward the upper end part of the man hole 11 while introducing pressurized air to expand them. The repair sheet 15 is pressed onto the wall surface 12 of the man hole 11 by the air tube 16 to come into close contact with the wall surface 12. Next, the respective lamps 22 of the unit 21 are turned on to cure a photo-curable resin impregnated in the repair sheet 15. Afterwards, the air expansion tubes 16, 16a are evacuated and contracted to be removed. <P>COPYRIGHT: (C)2004,JPO |
