REGENERATION CONSTRUCTION METHOD OF EXISTING SEWER PIPE AND REGENERATED PIPE CULVERT

摘要

PURPOSE:To shorten the execution period and reduce the execution cost while preventing the elution of the material components of an existing sewer pipe and a regeneration pipe to ensure reliability. CONSTITUTION:A steel regeneration pipe 7 having a closed cross-sectional shape folded so as to be expansible in its diameter is inserted in an existing sewer pipe and a high pressure fluid is injected into the regeneration pipe 7 to expand the pipe 7 in the existing sewer pipe 1 to bring the same into close contact with the existing sewer pipe 1 to cover the inner wall surface 1a of the existing sewer pipe 1 with the steel regeneration pipe 7.