Mine tunnel support system

Details Mine tunnel support system Mine tunnel support system

1992-05-05

1994-04-26

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405291, 405303, E21D 1544

Patent

active

053060997

ABSTRACT:
A mine tunnel support system of the type comprising spaced interconnected support sections is described. The support system is advanced along the tunnel in the forward direction in which mining is proceeding. Bolting machines may be carried on the support sections. A drill may be provided on one section and a bolt inserter provided on a section rearwardly thereof. As the system is advanced, the bolt inserter can insert a bolt into a hole previously formed by the drill. The operation of providing roof bolts is therefore split into a number of stages. A mechanism for erecting and/or pre-stressing permanent arch supports may be provided at the rear of the sections.

REFERENCES:
patent: 3811290 (1974-05-01), Swoager
patent: 4143991 (1979-03-01), Stafford
patent: 4307982 (1981-12-01), Nelson
patent: 4312609 (1982-01-01), Culley, Jr.
patent: 4676697 (1987-06-01), Stafford et al.
patent: 5176474 (1993-01-01), Mason

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