Tunnel lining rings

Details Tunnel lining rings Tunnel lining rings

1982-03-10

1984-06-05

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

405150, E21D 1110, E21D 1115

Patent

active

044525494

ABSTRACT:
The disclosure relates to a tunnel lining ring made up of a plurality of pre-cast arcuate concrete tunnel lining segments (10,11). The segments providing the lower part of the ring are formed with a recess (17) around the inner surface thereof to receive a secondary lining (18) in the completed tunnel to enable the inner surface of the invert of the tunnel to be graded as required and hence eliminate irregularities caused during the construction of the tunnel.

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