METHOD OF DEVELOPMENT OF LOOSE ORES OF DEEP SEATED DEPOSITS Russian patent published in 2009 - IPC E21C41/00 

FIELD: mining.

SUBSTANCE: invention refers to mining and can be implemented at development of loose ores of deep seated deposits. The method of development of loose ores of deep seated deposits consists in drilling vertical bore in side rocks, then in drilling horizontal opening entry from the bore to an ore body and in forming of an inlet chamber under the developed ore body. Over the top of the ore body an upper horizontal opening entry with drill chambers is drilled. Downward boreholes are led from these chambers. First the central borehole is drilled up to an entry into the inlet chamber, after what the inclined boreholes are drilled till their entering or contacting with the central one. Extraction of the ore body is performed by means of hydraulic wash-out. Loose rock mass comes into the inlet chamber and self flows out of it via an inclined chute into sedimentation-reservoir which is located near the bore and via connecting lines to storage chambers arranged next to the bore. Rock mass is supplied to surface from the sedimentation reservoir and storage chambers through the bore. Research laboratory or mini ore-dressing equipment is assembled in the storage chambers.

EFFECT: reduction of volume of boring as well as reduction of material costs; it also facilitates extraction of rare and valuable minerals while preserving ecological safety of environment.

2 cl, 1 ex, 1 dwg