Insulation of tunnel linings

Details Insulation of tunnel linings Insulation of tunnel linings

1980-06-10

1984-02-21

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405146, 405150, E21D 900, E21D 906, E21D 1100

Patent

active

044326670

ABSTRACT:
A tunnel or shaft lining is installed nondisruptively in a medium such as soil by longitudinally advancing an assembly (10) of tunnel lining sections (12-1 to 12-8) arranged in end-to-end relationship and having an inflatable torus (22- 1 to 22-7) interposed between adjacent sections. Worm-like advancement is effected by simultaneously inflating in sequence the tori 22-1, 22-4, 22-7 etc.; the tori 22-2, 22-5 etc. and the tori 22-3, 22-6 etc., and repeating the inflation procedure as necessary until sufficient advance has been achieved.

REFERENCES:
patent: 2946578 (1960-07-01), De Smaele
patent: 3005314 (1961-10-01), Cunningham
patent: 3169376 (1965-02-01), Cunningham
patent: 3180437 (1965-04-01), Kellner
patent: 3422631 (1969-01-01), Silverman
patent: 3708984 (1973-01-01), Coleman
patent: 3881776 (1975-05-01), Fashbaugh
patent: 3919851 (1975-11-01), Plourde
patent: 4095435 (1978-06-01), Uemura
patent: 4095655 (1978-06-01), Still

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