NON-EXCAVATION RESTORING METHOD FOR SERVICE PIPE AT RENEWAL OF UNDERGROUND EMBEDDED PIPE CONDUIT

摘要

PROBLEM TO BE SOLVED: To restore a service pipe connected with an existing pipe conduit such as an aged sewer pipe conduit by non-excavation process at the same time as renewal of the existing pipe conduit by the non-excavation process. SOLUTION: At the connecting position of a service pipe with an existing pipe conduit 1, the service pipe 2 is filled with a filler material 8 capable of being cut such as foaming styrol, mortar, etc., and a ground reformer 9 is built up round the service pipe 2 in the neighborhood of the connecting position, and the existing pipe conduit 1 is renewed by non-excavation process, and after a hole is communication with the service pipe 2 is formed in the inner wall of a new pipe conduit 10 to be laid, a lining is provided in the area at least covering the new pipe conduit 10 and service pipe 2 and the two are consolidated.