METHOD FOR OPEN-CUT MINING STEEPLY DIPPING ORE BODIES

摘要

FIELD: mining. SUBSTANCE: gallery-by-gallery extraction of stripping rocks and minerals is performed. Method of previous kerf forming is used when achieving limit outline. Mining of ore located beyond quarry outline is carried out after defining size of unit structural blocks according presented dependence, determination of medium size of unit structural block along quarry height, and appropriate adhesion in mountain mass, and formation of working side in new bounds of the development. Formation of working side is performed by drilling vertical holes using main process equipment. EFFECT: mining ore body located below design bottom level of a quarry. 1 dwg