THE SEALING STRUCTURE FOR MANHOLE

摘要

According to the present invention, a sealing structure for a manhole comprises: a manhole having a protruding step unit or a grooved step unit formed on an edge of an opening thereof; a gasket attached to the step unit; a watertight ring attached to the gasket; a manhole cover mounted on the step unit to seal the opening of the manhole, wherein the watertight ring is disposed therein; and a finishing wrench to fix the manhole cover on the manhole and allow the manhole cover to press the watertight ring.