INSTALLATION LAYER CLEANUP BOTTOM LINING SECTION Russian patent published in 2014 - IPC E21D23/00 

FIELD: mining.

SUBSTANCE: proposed lining comprises bed, canopy with extending deflector, two hydraulic props of goaf and face sides and appropriate supports. Two abutments tie the canopy goaf part with the face side supports. Hydraulic jacks are arranged on both lateral sides of the bed while top and bottom barriers are made on goaf side. Besides, it incorporates electrical and hydraulic equipment. Note here that section is integrated with cutting-supplying machine composed by horizontal screw equipped with cutters. Note here that said bed represents a telescopic design. Bed top part between goaf side supports has two lengthwise cut-outs. Bottom part can be extended by hydraulic jacks coupled with top part of the bed. Goaf side bottom barrier is welded and secured by ribs to the bed extending part. Hydraulic jack stroke makes at least that of lining section displacement while stiffness ribs are fitted in aforesaid cut-outs. Canopy is equipped with extra extending deflector arranged on goaf side whereto goaf barrier is welded. Bottom part of said extra extending deflector is provided with process opening to secure detachable brackets to support roll of wire tie or polymer screen.

EFFECT: higher safety, efficient maintenance of working space.

5 dwg