METHOD FOR DISCHARGING ORE FROM DRAW HOLES Russian patent published in 1994 - IPC

Abstract RU 2014472 C1

FIELD: mining industry. SUBSTANCE: method involves deflecting ore flow in draw hole by means of movable lid installed in the joint of scraping working 1 and draw-off working 3. Pillar 13 above scraping working turns to be outside of the zone of abrading effect of said flow. Simultaneously, the use of movable develops a region of inevitable ore hang-ups which are eliminated without explosives but with the aid of said movable lid. EFFECT: higher efficiency. 1 dwg

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RU 2 014 472 C1

Authors

Isaev M.A.

Kalekin R.S.

Jakovlev Ju.I.

Jakushev L.A.

Prosekov A.G.

Dates

1994-06-15—Published

1991-04-05—Filed