Tunnel drive shield

Details Tunnel drive shield Tunnel drive shield

1978-09-11

1981-05-05

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405141, E01G 302

Patent

active

042655650

ABSTRACT:
A tunnel drive shield comprises a cylindrical shell supported by two axially-spaced frames. The two frames are movable, relative to one another, in the direction of tunnel advance. In order to guide the two frames accurately, guide means interconnect the two frames, the guide means permitting movement only in the direction of tunnel advance. The guide means may be constituted by a plurality of telescopic guide devices. A knife shield may constitute the drive shield.

REFERENCES:
patent: 2197374 (1940-04-01), Bull
patent: 3061289 (1962-10-01), Robbins
patent: 3419311 (1968-12-01), Scaravilli et al.
patent: 3800549 (1974-04-01), Lobbe
patent: 3864925 (1975-02-01), Foik
patent: 3866426 (1975-02-01), Lobbe
patent: 3903707 (1975-09-01), Foik
patent: 3926005 (1975-12-01), Foik
patent: 3979921 (1976-09-01), Winberg et al.
patent: 4045088 (1977-08-01), Bechem
patent: 4048806 (1977-09-01), Stuckmann et al.
patent: 4073153 (1978-02-01), Stuckmann et al.
patent: 4120165 (1978-10-01), Stuckmann et al.

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