METHOD OF MINE WORKING DRIVING

摘要

mining industry. SUBSTANCE: method includes drilling of compensation cavity and blast holes, filling of water into compensation cavity of conjugated blast holes in amount equaling 0.2 of its volumetric capacity, and filling of explosive charges into blast holes, and their blasting with short delay, with formation of cut cavity by direct blasting of explosive charges. Cut cavity is formed by explosive charges of conjugated blast holes, and stream of flowing water is passed compensation cavity. EFFECT: higher efficiency of works and reduced cost of mine working driving. 3 dwg