| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a lining in an excavated hole and a work execution method thereof, which enable extremely simple construction. SOLUTION: A plurality of invert blocks 2 each having coupling steel members 2 in a T-like plan view shape, projected from both ends thereof, are laid on the bottom part of an excavated hole 1, being along the axial direction of the bore hole 1. Support steel members 4 in a T-like plan view shape are connected to the coupling steel members 3 of the invert blocks so as to be supported along the inner surface of the excavated hole 1. Both ends of a board B are locked to the support steel members 4 which are arranged in the axial direction of the excavated hole 1, by means of locking fixtures. A filler C is filed and then cured between the inner surface of the bore hole 1 and the board B so that the inner surface of the excavated hole 1 and the board B are integrally incorporated with each other.
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