Tunnel-driving apparatus

Details Tunnel-driving apparatus Tunnel-driving apparatus

1980-08-26

1982-10-26

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405141, E01G 302

Patent

active

043559247

ABSTRACT:
Apparatus for use in driving tunnels or the like has a main shield composed of elongate drive members supported and guided on a rigid frame as known per se. Rams serve to advance the drive members and the frame in alternative to effect the driving operation. A rear shield or cover is located behind the main shield. This rear shield is composed of elongate rear extension members connected with some of the drive members over the roof and part of the side walls of the tunnel. Supports fixed to the rear of the frame of the main shield engage beneath the lowermost rear extension members to support the rear shield. The supports, disposed symmetrically at either side of the axis of the tunnel, have brackets engaging with the lowermost rear extension members and these brackets can be displaced by piston and cylinder units to raise or lower the entire rear shield.

REFERENCES:
patent: 3373572 (1968-03-01), Kemper
patent: 3926005 (1975-12-01), Foik
patent: 4048806 (1977-09-01), Stuckmann et al.
patent: 4063425 (1977-12-01), Jutte et al.
patent: 4120165 (1978-10-01), Stuckmann et al.
patent: 4252463 (1981-02-01), Klysz

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