TRENCHLESS REPLACING METHOD FOR UNDERGROUND PIPE

摘要

PURPOSE: A replacement method of an underground pipe without excavation is provided to enable the replacement of a pipe having a length of about 30m without excavation by connecting multiple new pipes to each other using coupling pipes. CONSTITUTION: A replacement method of an underground pipe without excavation is as follows. A withdrawing region(16) where an aged pipe(1) is withdrawn and a press-fitting region(17) where a new pipe(2) is fitted are excavated. The aged pipe and the new pipe touch each other using a coupling pipe(21), and a wire(23) is inserted thereinto. A fastener(30) for press-fitting the new pipe by hitting is installed on the outer surface of the new pipe. The wire is pulled when the fastener is hit, and the aged pipe is withdrawn from the withdrawing region and the new pipe is inserted into the press-fitting region.