Mine roof support

Details Mine roof support Mine roof support

1982-04-20

1984-02-21

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Ground stabilization or reinforcement

405298, 405291, E21D 2316

Patent

active

044326734

ABSTRACT:
A method of mining a mineral in which a roof is supported by a plurality of mine roof supports of the kind specified, each advanceable by a force applied to a lower part thereof. During advance of the support an upper part thereof can be sufficiently retarded, by hydraulic jacks carried, by each of its adjacent supports, with respect to the advance of its lower part. This causes the support effectively to rotate and to raise the leading end of the lower part away from the ground on which it is advancing.

REFERENCES:
patent: 3548601 (1970-12-01), McLuckie
patent: 3728863 (1973-04-01), Hidasi
patent: 3837170 (1974-09-01), Martinko et al.
patent: 3903703 (1975-09-01), Lubojatsky
patent: 3911686 (1975-10-01), Becker et al.
patent: 4010618 (1977-03-01), Walker et al.
patent: 4041714 (1977-08-01), Allen
patent: 4306822 (1981-12-01), Weirich et al.

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