Pervious tunnel liner member

Details Pervious tunnel liner member Pervious tunnel liner member

E - Fixed Constructions

21

D

61/64

E21D 11/15 (2006.01) E21D 11/00 (2006.01) E21D 11/08 (2006.01)

Patent

CA 1188526

ABSTRACT OF THE DISCLOSURE This invention discloses a prefabricated liner plate for lining the interior of a subterranean tunnel as a primary lining. The liner plate is formed in such a manner that the outer arcuate face has a depression formed therein so that a filter placed in said depression permits water flow therethrough, but prevents the passage of surrounding soil particles therethrough. Suitable conduit means allows any water which may pass through the filter to be bled through the liner plate and led out of the tunnel.

397856

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