NON-CUT AND COVER RESTORATION METHOD OF SERVICE PIPE IN CASE OF RENEWAL OF UNDERGROUND EMBEDDING CONDUIT

摘要

PROBLEM TO BE SOLVED: To prevent the damage of a service pipe connected to the existing conduit and, at the same time, to prevent the occurrence of traffic difficulties or noise problems when soil improvement is made. SOLUTION: Before the renewal of cutting of the existing conduit 1, a temporary lining is applied over the whole in a service pipe 2, the whole service pipe 2 is monolithically formed by the temporary lining member 20 and, at the same time, it is combined with the existing conduit 1. After the renewal of the conduit, soil improvement grout is supplied to the inside of the front end 2c of the service pipe 2 through the inside of the service pipe 2, and the supplied group G is infiltrated into the neighboring ground through a gap s2 between a new conduit and the front end of service pipe to carry out ground improvement of the neighboring ground.