METHOD FOR UNDERGROUND MINING OF SLOPING AND INCLINED ORE BODIES IN CRYOLITE ZONE Russian patent published in 2012 - IPC E21C41/16 E21F15/00 

FIELD: mining.

SUBSTANCE: prior to start of filling works, a recumbent side of a section in a mined space to be filled is poured with water to form an ice crust, afterwards the mined space is filled with crushed dead rocks or frozen briquettes from dressing tails. The ice crust makes it possible to apply self-flow filling at the minimum angle of inclination of a recumbent side equal to α_min.=arctgK_fr, where K_fr - coefficient of friction as the filling material moves along the ice crust on the recumbent side of the mined space.

EFFECT: invention makes it possible to increase efficiency of filling works when mining sloping and inclined ore bodies in a cryolite zone due to expansion of a field of application of a self-flow method of dry filling material placement in a mined space by reduction of resistance to motion of this material on a recumbent side.

2 dwg