| 摘要 |
PURPOSE:To concurrently perform excavation and segment assembling by a method in which holders to be fixed or released freely are set behind an erector, and a mover to move the holders relatively in the axial direction of tunnel is provided. CONSTITUTION:An excavator is set behind a shield machine 1, and two or more holders 7 to hold an erector 6 are set to make the self-traveling of the erector 6 possible. A pressing mechanism to press segments 4 and 5 vertically and bilaterally is provided to a frame 20 through which a slide rod 18 is thrust. Slide jacks 25 and 26 are provided to the holders 7 to make the axial movement of them possible, and two segment holders consisting of an arm 10, a vertically movable jack 11, a vertically movable beam 12, and a slide jack 14 are provided to the erector 6. Excavation and segment assembling work can thus be attained in parallel. |
