Mineral mining installation

Details Mineral mining installation Mineral mining installation

E - Fixed Constructions

21

D

61/67

E21D 9/02 (2006.01) E21D 23/00 (2006.01)

Patent

CA 1153901

ABSTRACT OF THE DISCLOSURE 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 beams. 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.

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