Construction manner, and construction device null of tunnel wearing

摘要

PURPOSE:To apply a corrugated spiral pipe to tunnel lining, to improve rigidity and cut-off efficiency, to promote construction efficiency and to reduce construction cost. CONSTITUTION:A large number of shell corrugated steel plates 1a having rigidity strengthened by corrugated work are circularly closed spirally, so that a corrugated spiral pipe 1 is molded as a tunnel primary lining. Joining work is executed at the rear part of a shield machine, required widths of the shell corrugated steel plates 1a are overlapped with each other to the excavation of the shield machine and are subsequently joined with bolts 21. A gap between the corrugated spiral pipe 1 and a bedrock is filled with back filler, and if necessary, lining concrete as secondary lining is placed to the inside of the corrugated spiral pipe 1.