METHOD FOR OPEN DEVELOPMENT OF DEEP-LYING STEEPLY FALLING MINERAL DEPOSITS Russian patent published in 2019 - IPC E21C41/26 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in development of deep-laying steeply falling mineral deposits, upper part of which to greater depth has larger area in plan, and lower part has a cone-shaped shape, carried out using automotive and automotive-conveyor transport. Method for open development of deep-lying steeply falling deposits of minerals consists in development of upper part of deposit, at greater depth having larger area in plan, which is carried out using dump trucks of high carrying capacity, and in development of lower part of deposit, having cone-shaped shape, which is carried out using dump trucks of low carrying capacity, capable of overcoming high slope, crushing and reloading station and steeply inclined conveyor with pressure top belt circuit. During development of lower part of deposit crushing-and-reloading point and tail part of steeply inclined conveyor with pressure top belt contour are arranged on horizontal platform, which is formed in the upper part of the pillar under the last in depth section of the congress for dump trucks of high carrying capacity, located between adjacent horizons on the final side of the pit. Lower part of the pillar is partially actuated with gradual reduction of its width to width of the exit for auxiliary equipment. Unloading at a crushing and reloading station of light-duty dump trucks overcoming high slope is performed from a horizontal ramp for heavy-duty dump trucks.

EFFECT: elimination of formation on the end board in the lower part of the pit of an additional platform for a crushing-reloading station and tail part of a steeply inclined conveyor with a clamping upper belt circuit, which requires extraction of a large volume of overburden rocks.

1 cl, 3 dwg