Installation of tunnel linings

Details Installation of tunnel linings Installation of tunnel linings

E - Fixed Constructions

21

D

61/60, 61/64

E21D 11/08 (2006.01) E21B 17/08 (2006.01) E21D 9/00 (2006.01)

Patent

CA 1151436

ABSTRACT INSTALLATION OF TUNNEL LININGS A tunnel or shaft lining is installed non- disruptively 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.

353514

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