METHOD FOR CLOSELY LOCATED ORE BODIES CUTTING WITH SEPARATE PITS Russian patent published in 2007 - IPC E21C41/26 

FIELD: mining, particularly opencast mineral mining.

SUBSTANCE: method involves stepping rock up to design outline with leading in the first stage pit edge; transporting ore along main decline to plant and stacking overburden in dump; excavating connection entry between the first stage pit and the second stage pit so that the entry is opened in previously excavated the first stage pit; cutting the second stage pit; transporting ore and overburden from the second order pit via connection entry; depositing overburden from the second order pit in the first stage pit goaf after termination of the first stage pit excavation. Before ore and overburden transportation from second order pit via connection entry overburden excavated from the second order pit is accumulated in outer dump. Overburden from the second order pit is conveyed to day surface along temporary decline system. When the second pit side reaches designed outermost outline temporary declines are killed.

EFFECT: reduced costs of deposit development and decreased hazardous action of mining operations on environment.

4 cl, 4 dwg, 2 tbl, 2 ex