| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction work apparatus having a concrete surface treatment device for smoothing the whole surface of sprayed concrete.SOLUTION: A tunnel construction apparatus includes an erector for performing erection of timbering, and a spray arm for performing concrete spraying. They are mounted on one traveling vehicle. The tunnel construction apparatus has a concrete surface treatment device for smoothing a surface of concrete sprayed within a tunnel. The concrete surface treatment device comprises treatment means for smoothing irregularities on the surface of the sprayed concrete, and mounting means for mounting the treatment means on the erector. |
