| 摘要 |
The present invention relates to a structure of a manhole, which can adjust the height of the manhole in a road repair work such as installation of the manhole or coating of the road. The manhole comprises: a support frame (10) disposed on a concrete manhole; a height adjustment ring (20) whose the height is adjusted and fixed on the outer surfaces of the support frame (10); and a cover panel member (30) inserted into and fixed to the inside of the height adjustment ring (20). The support frame (10) comprises: a lower flange (11); a base lower ring (12) vertically formed from the lower flange (11); and a plurality of holding reinforcement support (13) installed between the lower flange (11) and the base lower ring (12). The height adjustment ring (20) is formed to have a cylindrical shape having an inner diameter corresponding to an outer diameter of the base lower ring (12) and includes a plurality of slits (21) whose lengths from the lower side are different from one other. By fitting the holding reinforcement support (13) of the support frame (10) into the height adjustment ring (20), the height of the height adjustment ring (20) is adjusted and is fixed to the support frame (10). |
