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Application filed by Оксана Ярославовна Твердая, Виктор Данилович Воробьев, Александр Михайлович Масюкевич, Владимир Владимирович ТвердыйfiledCriticalОксана Ярославовна Твердая
Priority to UAU201210650UpriorityCriticalpatent/UA74531U/en
Publication of UA74531UpublicationCriticalpatent/UA74531U/en
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Abstract
A method for blast crushing broken massifs of rocks includes marking a system of wells on the rock block in the pit, well drilling, charging those with explosives with installation of initiation means, well tamping, mounting blast network, installation of retarders, blasting. The value of specific consumption of explosive in the zone of weakness from the side exposed surface of the shoulder changes with separation from the exposed surface from 70 to 100 % of its design value.
UAU201210650U2012-09-112012-09-11Method for blast crushing broken rock massifs
UA74531U
(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.