Method and apparatus for advancing cylindrical bodies undergroun

Details Method and apparatus for advancing cylindrical bodies undergroun Method and apparatus for advancing cylindrical bodies undergroun

1979-12-04

1982-03-30

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405138, 405184, E21D 906

Patent

active

043221807

ABSTRACT:
A method and an apparatus for advancing cylindrical bodies. More than two underground cylindrical bodies are laid in longitudinal alignment with thrusting jacks disposed between them. A connecting member is arranged to pierce through them. A fastener is attached to one end of the connecting member while an advancing jack arrangement which has a removable-and-attachable fastener is attached to the other end of the connecting member. A suitable anchor body is disposed in front of the alignment of cylindrical bodies. Between the anchor body and each of the cylindrical bodies, there is provided a fixing member which pierces through them. Removable-and-attachable fasteners are disposed between the fixing member and the cylindrical bodies to interlink them for moving them forward underground one after another.

REFERENCES:
patent: 3234743 (1966-02-01), Levy
patent: 3613384 (1971-10-01), Jacobs
patent: 3708984 (1973-01-01), Coleman
patent: 3733835 (1973-05-01), Jacobs
patent: 4095435 (1978-06-01), Uemura
patent: 4122683 (1978-10-01), Follert et al.

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