METHOD OF MINING OF MINERAL DEPOSITS Russian patent published in 1998 - IPC

FIELD: mining industry; mining of mineral deposits. SUBSTANCE: producing bed is opened in each worked hexagonal cell by central and six periphery holes in its corners. Central hole is cased with casing string having six vertical slots with height equalling thickness of producing bed and with width equalling the size of conditioned piece. Central hole is connected with periphery ones by means of vertical slotted openings from through indicated slots. Mineral is washed-out by hydraulic giants from periphery holes with formation of extraction rooms with diameter equalling the length of side of hexagonal cell. Formed pulp is transferred through slotted openings to pulp lifting string installed in central hole and lifted to the surface with the help of lifting equipment. Extraction rooms are formed alternately in opposite corners of hexagonal cell. Outside fractions are removed from suction zone of lifting equipment to worked-out space of adjacent room. Formation of the last room in cell is in corner coinciding with direction of advance of front of deposit mining. EFFECT: higher efficiency. 2 dwg