PROCEDURE OF DEVELOPMENT OF THICK STEEP PITCHED ORE BODIES Russian patent published in 2009 - IPC E21C41/22 E21F15/08 

FIELD: mining.

SUBSTANCE: invention refers to mining industry and can be implemented at underground development of steep pitched deposits represented with unstable ore, under thickness of water-flooded sediments, excavation of which is connected with hazard of underground water inrush into mine workings. The procedure of development of thick steep pitched ore bodies consists in division of ore body into layers mined in descending order, in mining layers with cuts and in filling mined space with a solidifying material. Sections of location of cavities above filled massif and sizes of these cavities are determined by visual or instrument survey from cuts mined adjoined to the filled massif. Solidifying materials are supplied to places of after-filling in adjoined cuts using, for example a concrete pump equipped with the system of control over filling mixture supply. Cavities are after-filled in a divergent order in the direction off their boundaries, from uttermost adjoined cuts to adjoined cuts.

EFFECT: increased completeness of filling mined space, decreased space of mining auxiliary entries and increased safety of mining at development of deposits.

4 dwg