FIELD: mining industry, particularly underground gently dipping ore deposit development.
SUBSTANCE: method involves creating preparatory-development workings; forming chambers and pillars in pairs within uncontrolled leading rock caving pitch; cutting ore in chamber; drawing main portion of cut ore under rock ledge protection so that ore slope is created; performing forced rock caving over chamber along with simultaneous roof rock block excavation over pillar; cutting the ore pillar and drawing remainder ore under caved rock and descending roof block. Chambers are cut by chamber length increase in direction transversal to second working front in several layers. Layer thickness is determined from mathematical expression. Then cut ore is drawn in end direction under rock peak protection.
EFFECT: increased ore cutting efficiency due to decreased losses and ore dilution, increased operational safety.
4 cl, 7 dwg
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