FIELD: mining.
SUBSTANCE: invention relates to mining and can be used to develop steeply dipping deposits of unstable ores. Method includes piercing the pile assemblies, the extraction of the mineral by crosswise oriented rubbing with horizontal or slightly inclined chambers of polygonal shape, with a displacement of the chambers of adjacent floors by half their width, with the excavation of ore by breaking off wells and laying out the worked out space. Directly above the top floor a protective covering is being built. Width, the height of the chambers of various lines, the angle of inclination of the side walls of the chambers is determined from mathematical expressions, proceeding from the stable span of the protective overlap, the width of the boring pile ort and the angle of internal friction of the ore massif. After erecting a protective overlap, the ore in the chamber is worked out by drilling and blasting in a clamped medium. In this case, the next run is worked out after the previous one is filled.
EFFECT: invention is aimed at improving safety of ore mining, minimizing impoverishment and loss of ore.
1 cl, 4 dwg
