| 摘要 |
PROBLEM TO BE SOLVED: To provide a form for a tunnel, which enables simple and inexpensive construction of the tunnel where a leg shape of lining concrete is changed, and a tunnel construction method.SOLUTION: A form 1 for a tunnel includes a form body part 2, and an invert foam material 3 that is attached to a lower end of the form body part 2. The invert foam material 3 has a concrete-molded surface formed like a curved surface. An attachment 4 for a lining leg, which has a planar concrete-molded surface, is detachably attached to the concrete-molded surface of the invert foam material 3. |
