| 摘要 |
PURPOSE:To construct a lining capable of corresponding to a tunnel having high strength, large depth and a large cross section easily while excavating the tunnel. CONSTITUTION:A moving timbering 3 is installed movably into a tunnel 50. Front messers 11 are mounted to the moving timbering 3 in a projecting- retreating-free manner. A rear outer circumferential plate 18 is set up to the front messers 11 in a shape along a bed-rock 60. A sheet supporter 19 is fitted inside the rear outer circumferential plate 18. Beltlike sheets 21, 24 for lining reinforced by a reinforcing core material are housed in the sheet supporter 19 rotatably under a wound state. A timbering 140 is installed inside the sheets 21, 24 for lining. When the tunnel 50 is excavated, the front messers 11 are forward moved while the sheets 21, 24 for lining are forwarded to the rear, and mounted along the bedrock 60. A filling material 41 is injected among the sheets 21, 24 for lining and the bedrock 60 or into the sheet 24 for lining, thus constructing a lining 51. |
