METHOD FOR EXTRACTION OF MINERAL RESOURCES Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: method includes open extraction and removal of mineral resource via extraction chambers with preventive blocks between them and following backfill of chambers. Within limits of extracted deposit three working areas are formed: preparatory - for open operations, main - for open and underground operations and final - for dumping and re-cultivation, areas are formed successively with delay concurrently via width and height of bed, while preparatory area is formed discontinuously, with preventive blocks with non-disturbed surface no more than 600 meters long along bed width. During process of open and underground operations working tool of complex is initially placed in position for its longitudinal axis at angle 30-150° in horizontal plane to axis of bed width, during later entries working tool of complex is displaced with altering position of its longitudinal axis in given range of angles with step 0.5-2°, after which procedure in analogical way preparatory blocks are extracted starting from their ends.

EFFECT: broader functional capabilities, higher productiveness.

4 cl, 1 dwg