The influence of geology and ore deposit occurrence conditions on dilution indicators of extracted reserves

Authors

Keywords:

iron ore, deposits, mining, dilution, geological structure

Abstract

The development of iron-ore deposits is accompanied by the excavation formation of considerable dimensions in the underground space and to ensure high technical and economic indicators of extraction, especially when developing high-grade iron ore, it is necessary to take into account the nature of the geological structure of the massif on the indicators of their dilution. It is established that when the chambers are worked out on a junction with hanging wall waste, the indices of ore dilution with the adjacent strata are 1.7 times higher than on a junction with the foot wall of the deposit. The tendencies and causes of variability of volume of extracted ore dilution with the adjacent strata in different geological structure parts of the ore deposits are revealed, the ore basin across the pitch is characterized by a general evolving trend of the rock strength of the hanging wall and ore basin angle of incidence decreasing and increasing the thickness of the deposit from the northern side to the southern one. It has been established that the concentration of hanging rocks caving and extracted ore dilution indices is enhanced by changing their morphological composition, reducing the strength and stability of these rocks, reducing the ore basin angle of incidence, and increasing the ore deposit thickness. The obtained results allow us to lay the foundations for optimizing the parameters of the development system and the rational procedure for breaking up ore reserves in the chambers under the changing mining and geological conditions of field development.

Author Biographies

Mykhailo Petlovanyi, National Technical University "Dnipro Polytechnic"

Dr. Mykhailo Petlovanyi - Associate professor of the underground mining department at the National Technical University "Dnipro Polytechnic"

Vasyl Lozynskyi, National Technical University "Dnipro Polytechnic"

Dr. Vasyl Lozynskyi - Associate professor of the Underground Mining Department at the National Technical University "Dnipro Polytechnic"

Serhii Zubko, PJSC “Zaporizhzhia Iron-ore Plant”

Dr. Serhii Zubko - Mining engineer at PJSC “Zaporizhzhia Iron-ore Plant”

Pavlo Saik, National Technical University "Dnipro Polytechnic"

Dr. Pavlo Saik - Associate professor of the underground mining department at the National Technical University "Dnipro Polytechnic"

Kateryna Sai, National Technical University "Dnipro Polytechnic"

Dr. Kateryna Sai - Associate professor of the underground mining department at the National Technical University "Dnipro Polytechnic"

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Published

2018-10-16

How to Cite

Petlovanyi, M., Lozynskyi, V., Zubko, S., Saik, P., & Sai, K. (2018). The influence of geology and ore deposit occurrence conditions on dilution indicators of extracted reserves. Rudarsko-geološko-Naftni Zbornik (The Mining-Geological-Petroleum Bulletin), 34(1). Retrieved from https://hrcak.srce.hr/ojs/index.php/rgn/article/view/7458

Issue

Section

Mining

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