PROCESS OF DEVELOPMENT OF COMPLEX-STRUCTURED DEPOSITS Russian patent published in 2004 - IPC

FIELD: mining industry. SUBSTANCE: invention deals with complex-structured steeply deepening and inclined deposits. Their development includes driving of development galleries, sublevel excavation of mineral resource by chambers, formation under hanging wall of sublevel of temporary ore pillar with bared wall placed with inclination opposite to incidence angle of ore body, formation of cutting rift through height of sublevel, breaking of ore in chamber by shot holes, subsequent destruction of pillar and discharge of broken ore through outlets. Breaking of ore and rock interlayers is carried out by inclined layers, cutting rift and broken layers are formed under angle concordant with incidence angle of ore body. Bared wall of temporary ore pillar is formed at angle equal to angle of displacement of ore mass. Portion of mass limited by cutting rift on one side and by bared wall of temporary ore pillar on the other side is broken first, portion of mass limited by cutting rift on one side and by footwall on the other side is broken later and third portion of ore body is caved in finally. EFFECT: increased fullness and quality of excavation of mineral resource from entrails of the earth, increased safety of stopping operations and excluded probability of destruction of shot holes. 4 DWG