Mineral mining installation

Details Mineral mining installation Mineral mining installation

1980-03-06

1982-04-20

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405302, E21D 2316

Patent

active

043256597

ABSTRACT:
A longwall mineral mining installation has a longwall conveyor and a plurality of roof support units positioned side-by-side at the goaf side of the conveyor. The hydraulic appliances of the roof support units, such as their hydraulic props, hydraulic advance rams and hydraulic control valves, are supplied with pressurized hydraulic fluid from hydraulic supply lines which run along the goaf side of the conveyor. A plurality of flat, plate-like intermediate members are provided at the goaf side of the conveyor. These intermediate members are formed with internal ducts for feeding the hydraulic fluid from the supply lines to the hydraulic appliances of the roof support units.

REFERENCES:
patent: 2859022 (1958-11-01), Frye
patent: 2910281 (1959-10-01), Wilkenloh et al.
patent: 3120105 (1964-02-01), Kibble et al.
patent: 4158326 (1979-01-01), Krieger

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