| 摘要 |
PROBLEM TO BE SOLVED: To provide a segment and an erector capable of abbreviating filling work of a filler, fitted insertion work for a plug and a secondary lining by smoothing the inside of the segment. SOLUTION: In the plate-like segment 1 placed so as to oppose a tunnel wall, a connecting section 5 detachably connected to an erector grip 4 provided on the erector 2 is formed on a joint surface 1a connected to the adjoining segment. COPYRIGHT: (C)2005,JPO&NCIPI
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