Державний Вищий Навчальний Заклад "Криворізький Національний Університет"
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Priority to UAU201511199UpriorityCriticalpatent/UA106514U/en
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A method of development of ore deposits, which includes subsurface induced caving of ore and ore containing rocks, with separation of surfaces on panels, economic and ventilation workings for subsurface horizons of each panel, ore transporting workings and drilling workings along the longitudinal axis of the panel, drilling of the holes in the panels for formation mine workings for ore drawing and blasthole rings for breaking of ore, ore drawing and transportation. Drilling is carried out between transportation workings and is performed by means of shallow blasthole method of breaking the rock mass, stopes are provided in the area of exhaust ports with length of 1-1.5 m, after that drilling workings provide drilling holes or blastholes with connection with stope and blasting forming exhaust ports, and the bottom holes in blasthole rings are drilled in drilling working at angles EMBED Equation.3 .
UAU201511199U2015-11-132015-11-13A method of development of ore deposits
UA106514U
(en)
Block sinking mining method comprising, digging undercut tunnels, drilling undercut blast holes through the undercut tunnel roofs and placing and detonating explosive charges in those holes to fly rocks over the undercut tunnels, digging Tunnels at the extraction level at an extraction level below the undercut level.