FIELD: mining.
SUBSTANCE: used in underground mining of deposits represented by powerful steeply dipping ore bodies, followed by goaf stowing with hardening mixtures. A method for developing powerful steeply dipping ore bodies with goaf stowing, including the development of mining chambers of the first and subsequent stages, the roof of which is given a polygonal shape, and the bottom is similar to a mirror image of the roof, and the extraction of ore simultaneously on several floors, characterized in that the chambers of the underlying floor perform under the chambers of the upper floor without displacement and exclude direct contact of the broken chambers of the lower floor with the embedded chambers on the upper floor by leaving on the horizon interfloor pillars of a diamond-shaped asymmetrical shape, designed along the contour so that side “a” is not parallel to side “c”, and side “c” was not parallel to side “d”, in addition, side “a” is larger in linear dimensions than side “c”, and side “c” is larger in linear dimensions than side “d”, while the diamond-shaped rear sight is removed after excavation chamber reserves both on the upper horizon and on the lower horizon, ore bodies are mined in the floor in sections, including chambers of the first (I), second (II) and third stages (III), where the width of the chambers of the first stage (I) is twice larger than the width of the chambers (II-III stages) and is 40 m, and when designing the face of the chambers (I) of the stage it is given a convex shape.
EFFECT: ensuring the safety and efficiency of ore mining.
1 cl, 2 dwg
