MANHOLE REPAIR DEVICE AND METHOD

摘要

PURPOSE: A manhole repair method using a manhole repair device is provided to reduce the term of repair works for a manhole and to prevent an inflow of rainwater and wastewater. CONSTITUTION: The manhole repair method using a manhole repair device comprises the steps of: diverting water by installing a manhole(200) to be repaired, an intake pipe(201), a drainpipe(202) and a connection pipe(203); installing a stiffening tube(300) filled up with thermosetting resins to the inner wall of the manhole(200); installing an expansion tube(400) having the same size and shape as the manhole into the manhole(200) attached with the stiffening tube(400); installing and fixing a manhole repair device connected with the neck of the expansion tube(400) into the upper part of an opening of the manhole(200); hardening the resins filled in the stiffening tube(300) by adding temperature and pressure to the expansion tube(400), then adhering closely to the inner wall of the manhole(200); and finishing by separating the expansion tube(400) and the manhole repair device from the manhole(200), then removing the connection pipe(203) installed to divert water.