POWERED SUPPORT FOR STEEP SLOPES Russian patent published in 2014 - IPC E21D23/00 

FIELD: mining.

SUBSTANCE: invention relates to mining industry, in particular, to the field of powered supporting of stope faces during extraction of coal from steep beds of high and average thickness. The powered support comprises a support base, comprising bottomhole and goaf beams with barriers and strut stands, connected to each other by tails from special profile, and linear sections, each of which comprises a beam, a block, an equipment compartment, and also strut, haulage and correction elements. At the same time the equipment compartment comprises two capsules with a hatch and a manhole, and also a technological hatch and windows for supply of a laser or an ultrasonic device to a bottomhole, between which the capsules are fixed by lock devices, and have manholes are provided for communication. Under the equipment compartment there is a haulage and stabilisation unit, comprising a body, the bottom of which has a bulge in the form of a block. Roller supports are fixed directly to the body of the haulage block at both sides, and the roller supports comprise a bracket with a hydraulic jack of normal stabilisation and a spring shock absorber, and a carriage with rollers as capable of their movement in slots of the special profile of tails. Above the equipment compartment there is a block of a vaulted section with a hole for an air duct. In the centre of the vaulted section there is a pneumatic lift with a spinning device. Besides, the strut element comprises a beam and pneumatic cushions, arranged in the jacket on a support slab mounted on the stem of the pneumatic lift. And the support base comprises cross beams that extend towards bed rise and fall with extension jacks and hydraulic stands of a strut of double support extension.

EFFECT: development of a stable operable support for extraction of thick steep beds under conditions of extreme manifestation of mining pressure.

3 cl, 3 dwg