MANHOLE

摘要

A manhole structure for the separation limitation and restoration of a manhole cover is provided to control the water pressure and the gas pressure gathered in an upper part of the inside of a manhole automatically, and to discharge water rapidly by discharging the high-pressure water flowing backward in a manhole in all directions of a manhole cover. A manhole structure for the separation limitation and restoration of a manhole cover comprises a manhole body(101), a hanging projection(101a) formed on the inside of the manhole body, a manhole cover(102) settled on the hanging projection, many joints(110) provided with a fastener coupling hole, a guide groove(112) located in the middle of the joint and formed vertically on the edge of the manhole cover, a fixing plate(121) coupled to the joint by a fastener and provided with a through hole, and a separation preventer(122) provided with a hanging projection and formed on the lower part of the fixing plate.