Mineral mining installation

Details Mineral mining installation Mineral mining installation

1981-10-19

1983-07-05

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 32, 299 33, 405291, E21C 2902, E21D 2304

Patent

active

043914691

ABSTRACT:
A mineral mining installation is provided for use in a steeply-inclined longwall working. The installation comprises a ladder-shaped support frame, and a plurality of roof support units. The support frame extends along the entire length of the longwall working, and has a pair of generally parallel longitudinal beams interconnected by a plurality of transverse beams. The roof support units are positioned between the longitudinal beams, and are supported on the transverse beam. Each of the longitudinal beams comprises a plurality of beam sections pivotably connected together end-to-end. The support frame comprises a plurality of detachably connected sub-frames, each of which comprises a respective transverse beam and a respective beam section of each of the longitudinal beams.

REFERENCES:
patent: 3504944 (1970-04-01), Holz et al.
patent: 3677603 (1972-07-01), Small
patent: 3861749 (1975-01-01), Georg
patent: 3872677 (1975-03-01), Linke et al.

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