FIELD: mining.
SUBSTANCE: method includes stagewise mining of a pit field, preparation of rock mass to excavation by blast hole drilling works, transportation of a mineral and stripping rocks by dump trucks, arrangement of stripping rocks in internal and external dumps. Then, as mining works reach the horizon between the last but one and the last stages of pit deepening, they arrange a loop turn of the spiral descent along the pit deepening contour to a rated horizon, in which the descent is coupled with the site that is extended along the deposit spread. As mining works reach the pit bottom, they start filling the lower layer of the internal pit dump in the central part of the pit, and for filling of the above layers they arrange descents and horizontal extended sites between each other and the slope of the non-working side, in direction opposite to the direction of movement of descents and extended sites of filled layers as their fronts move forward.
EFFECT: reduced labour intensiveness of mineral production.
5 dwg
