ASSESSMENT OF ENVIRONMENTAL AND ECONOMIC EFFICIENCY OF IRON ORE BREAKING TECHNOLOGY USING EMULSION EXPLOSIVES

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 117

UDC 622.23:504.3.054

Authors:

Dolgova T.I., D.Sc. (Tech.) (State H E I «NMU»)

Mironova I.G., Ph.D. (Tech.) (State H E I «NMU»)

Pavlichenko A.V., Ph.D. (Biol.), Associate Professor (State H E I «NMU»)

Abstract.

Methodology for calculating parameters of drilling and blasting operations for stoping works in mines of Kryvorozhskiy basin and PJSC «Zaporizhskiy iron-ore plant» has been improved with the help of established coefficient of relative capacity for the Ukrainit-PM-2B explosive. A new technology of stoping operations for ore breaking by square-chamber methods at deposit thickness more than 5 m is proposed which assumes usage of emulsion explosives and downward drilling of production hole rings in the direction of underlying drilling horizons. Ecological and economical effectiveness of the proposed ore breaking technology implemented in the extraction chambers was estimated. Regularities of harmful substances hazard index changing were established depending on distance to the emission point when trotyl-contained and emulsion explosives are used. Implementation of the proposed technology allows decreasing prime-cost of 1 ton of ore by 15 % per one extraction unit.

Keywords.

Trotyl-contained and emulsion explosives, ecological safety, technology of ore breaking.

References:

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About the authors:

Dolgova Tatyana Ivanovna, Doctor of Technical Science (D.Sc.), Professor of department Aerology and protection of labour, State Higher Educational Institution «National Mining University» (SHEI «NMU»), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Mironova Inna Gennadievna, Candidate of Technical Sciences, Associate Professor of ecology department, State Higher Educational Institution «National Mining University» (SHEI «NMU»), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Pavlichenko Artem Vladimirovich, Candidate of Biological Sciences, Associate Professor, Associate Professor of ecology department, State Higher Educational Institution «National Mining University» (SHEI «NMU»), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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