| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for filling a form for tunnel lining with concrete at a high density to form a tunnel lining having excellent durability. SOLUTION: In a process for placing concrete for the lining by installing the form in a tunnel, the pressure of concrete filled into the form 1 is measured by pressure measuring means 15, 16 to adjust the pressure of the concrete 9 filled into the form 1 to such a range that prevents the deformation or breakage of the form 1. Concrete is pressed in through a first blow-up port 11 in a crest formed at the lap side 24 of a space partitioned by the form 1, and the concrete 9 is compacted by a vibrator 8 after filling the form 1 with the concrete. Then, the concrete is further pressed in through a second blow-up port 11c in a crest formed at the end side 25 of the form. COPYRIGHT: (C)2008,JPO&INPIT
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