| 摘要 |
PURPOSE:To improve the efficiency of tunnel construction safely by simply work without loosening a bedrock by conducting circular excavation first, driving a cast-in-place lining material in the space of a circular lining section formed by the excavation and performing cut excavation. CONSTITUTION:The ground 11 is excavated circularly by an annular cutter 12 and an auxiliary cutter 16 for an excavator, muck is discharged to the outside through a working pile 24, and one part of muck is fed into an earth- moving equipment 18 through a muck housing section 17. A hardener is forward to the earth-moving equipment 18 by a pump 21 from a hardener tank 22 at the same time, and muck and the hardener are kneaded by a screw conveyor and a lining material is manufactured. The lining material is extruded into the space 13 of a lining section and pressed by a press ring 19, etc., and a lining 27 is driven while using a skin plate 15 as a formwork. The lining 27 is cured, and a bedrock in a section surrounded by the lining 27 is excavated successively from the rear and cut is conducted, and the process is repeated, thus constructing a tunnel. |
