METHOD FOR OPENCAST MINING OF STEEPLY DEEPING MINERAL DEPOSITS

摘要

Method for opencast mining of steeply dipping mineral deposits includes development of quarry field in longitudinal direction with benches with formation of depression zone in one of its ends and development of working zone by overburden rocks with steeply inclined layers with development of those with rock ledges. Preliminarily one determines value of stabilized slope angle of flank of opencast and height of given sections of working zone of benches. After that at given angle overburden rocks with steeply inclined layers are developed. At each stage working sites are connected to each other and moved at mining of overburden rocks.