METHOD FOR DEVELOPMENT OF NARROW SLOPING AND INCLINED ORE BODIES Russian patent published in 2010 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: method includes preparation and cutting of block, separate extraction of ore by horizontal layers upplunge, filling of worked space by exploded host rocks. After extraction of ore from horizontal layer upplunge, undercutting course is carried out by ore and host rocks skin to skin to worked space. Horizontal blast holes or wells are drilled in ore and rock, explosive substances charges are placed in them, and ore and rock are exploded separately, with delivery of ore by explosion force through worked space into previous undercutting course. Broken rock is placed, after removal of ore from undercutting course, into worked space between two undercutting courses by explosion force or with the help of self-propelled handling machine.

EFFECT: method makes it possible to reduce scope of preparatory mining works and volumes of cut host rocks, dilution of ore, costs for mountain pressure control and production prime cost.

3 dwg