Methods of and apparatus for driving tunnels

Details Methods of and apparatus for driving tunnels Methods of and apparatus for driving tunnels

1977-02-11

1978-10-17

Shapiro, Jacob

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405146, 405150, E01G 302

Patent

active

041201655

ABSTRACT:
Apparatus for driving tunnels or the like employs a drive shield known per se, with drive members supported and guided on a frame. Rear extension members are linked to the drive members, preferably through units permitting relative displacement therebetween and these rear members form a rear shield for receiving supports and reinforcements for a permanent lining for the tunnel. A concrete spraying nozzle or the like applies a strip of concrete to the tunnel wall each time a rear member is shifted in the advancing direction. In this way a series of strips, preferably shape locked together at their ends, can be built up stage by stage to create the lining.

REFERENCES:
patent: 3950956 (1976-04-01), Lobbe
patent: 4022029 (1977-05-01), Jutte et al.
patent: 4043137 (1977-08-01), Jutte et al.

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