Tunnel driving apparatus

Details Tunnel driving apparatus Tunnel driving apparatus

1976-12-07

1977-12-20

Taylor, Dennis L.

61 42, 61 84, E01G 302

Patent

active

040634256

ABSTRACT:
A shield for tunnel driving operations comprises a plurality of elongate drive members supporting the tunnel wall at a forward region and carried by a frame. Rams serve to advance the members individually, or in groups, and to shift up the frame. Each drive member has a rear extension plate or tail extending rearwardly of the tunnel driving direction. Lining elements are assembled within a chamber defined by the tails and a space between the assembled elements and the inner surfaces of the tails is filled as the tunnel advances to create a permanent lining. The space is sealed off with the aid of seals effective between the longitudinal edges of the tails and with a radial seal or the like between the lining elements and the tails.

REFERENCES:
patent: 834745 (1906-10-01), Moir
patent: 1275910 (1918-08-01), Hamilton
patent: 1855466 (1932-04-01), Barber et al.
patent: 3581507 (1971-06-01), Stevens
patent: 3998067 (1976-12-01), Fernandez

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