Support assembly for underground mine and tunnel roofs

Details Support assembly for underground mine and tunnel roofs Support assembly for underground mine and tunnel roofs

1980-07-10

1982-08-03

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

411 24, 411 60, E21D 2100

Patent

active

043425275

ABSTRACT:
This is a support assembly for underground mine and tunnel roofs. The assembly includes a tubular member comprising two opposed semi-cylindrical portions, the opposed longitudinal edges on one side of the member being connected together. Portions of the edges on the opposite side of the member are provided with one or more complemental mating angular recesses, which together form a tapered opening in the tubular wall for receiving wedge members. A ram successively engages the wedge members to force the same through the tapered opening, to effect expansion of the tubular member into bonding engagement with the roof.

REFERENCES:
patent: 2388297 (1945-11-01), Slaughter
patent: 3808938 (1974-05-01), Chromy
patent: 3815467 (1974-06-01), Fisher
patent: 4147444 (1979-04-01), Herb et al.

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