| 摘要 |
Abstract - 2012200492 A method of lining a tunnel, comprising the steps of assembling a plurality of shutter panels to form a plurality of shutter rings; assembling the shutter rings end to end in the tunnel to form a concrete shutter with an annular space between the tunnel and the shutter; pumping liquid concrete into the annular space; allowing the concrete to set to form said lining; and disassembling the shutter rings when the concrete is at least partially set. Fig. 4 ---------------------- --------- Fig. 5 |
