Tunnel driving apparatus
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsHans Jutte, Dieter Stuckmann
Life of this patent
Estimating the term…
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.
Claims16
A tunnel driving apparatus comprising a shield with a series of elongate drive members arranged side-by-side in parallel relationship, a frame supporting the drive members for individual longitudinal displacement, means for alternately advancing the drive members and the frame, a rear extension forming a tail provided for each drive member, the tails being relatively shiftable in accordance with the tunnel advancement and serving to define a reception zone for lining elements spaced from the tunnel wall and from the inner surfaces of the tails and sealing means for sealing off the space between the inner surfaces of the tails and the lining elements whereby to permit a filling material to be introduced into said space as the tunnel advances to create a permanent tunnel lining.
A shield for use in tunnel driving operations comprising a series of elongate individually movable drive members arranged side-by-side in parallel relationship, a frame supporting the drive members, shifting means coupled between the drive members and the frame for alternately advancing the drive members and the frame, a rear extension provided on each drive member, the rear extension combining to define therein a rear zone, tunnel lining elements arranged in said rear zone and spaced from the inner surfaces of the rear extensions, longitudinal seals between the longitudinal edges of the rear extensions, a further seal between the inner surfaces of the rear extensions and the lining elements and means for introducing a filling material into the space between the lining element and the inner surfaces of the rear extensions, the filling material combining with the lining elements to produce a permanent lining supporting the tunnel wall and being prevented from overflow by said seals.
Dependencies are inferred from the claim text.