Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Patent
1987-02-25
1987-12-01
Corbin, David H.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Boring
405150, E21D 1110
Patent
active
047100583
ABSTRACT:
An improved concrete lining machine is provided for lining the walls of a bored tunnel. The machine typically consists of three separable machine sections each having a frame and a plurality of supporting plates rotatable in an endless loop chain. Fresh concrete is sealed from the second machine section by a plurality of adjoining main and auxiliary plates which remain in place relative to the concrete until the concrete is at least substantially cured. According to the method of the present invention, the first machine portion partially supports the bored tunnel walls, and a third machine portion partially supports the curing concrete. The cost of tunnel lining according to the techniques of the present invention has been substantially reduced, and the machine may be placed directly behind a tunnel boring machine.
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