METHOD OF OPEN EXCAVATING OF MINERAL DEPOSITS Russian patent published in 2009 - IPC E21C41/26 B65G15/16 

FIELD: mining.

SUBSTANCE: invention refers to mining and can be implemented at open excavating of mineral deposits in form of edge and inclined ore bodies of high and low thickness and also in form of veins. The method consists in dividing overburden and ore body into zones along vertical. Inclined, steeply inclined and vertical sections of borders are made in zones and are secured in deep zones at pit completion; as excavating of mineral advances in the first zone, in place of termination of rational implementation of vehicle, a conveyor installation is assembled on border of the pit in form of bearing and clamping bands with variable steepness of incline corresponding to equistable angle of border incline; frictional drums of the conveyor installations and a pulling body of a hoist engine are used as pulling members; the hoist engine is installed on the surface, which facilitates adding steep inclined and vertical blocks of the conveyor installation as excavation of mineral in the second, third and successive zones advances. For this purpose platforms are made in side zones of the pit, whereon crushers are installed and a receiving section of the conveyor stand is mounted; periodically they are displaced when excavation of the next stage commences and steepness of the stand is increased. Also, to facilitate adequate uniform maintaining load of lumps of ore (rock) on an apron at the height of the stand stoppers are arranged on a rubberised band; the stoppers are made in form of elevations out of the same material and of a strip shape, expanding at the base to suppress shearing load of lumps.

EFFECT: increased efficiency of operation at transporting and delivery of excavated mass to surface.

1 ex, 12 dwg