Features of underlying levels opening at “ArsellorMittal Kryvyi Rih” underground mine

Stupnik, Nikolay; Kalinichenko, Vsevolod; Pismennij, S; Kalinichenko, E

doi:10.1201/b19901-8

Cited by 25 publications

(20 citation statements)

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“…As a result of research [1,20], it has been revealed that the shape of the compensation space greatly influences on the rock massif stability in the conditions of the rock pressure manifestation. Thus, it has been proved that when mining the deposit of the main strike using a sloping compensation chamber, the normal stresses in the upper part of outcropping span decrease by 4 times.…”

Section: Introductionmentioning

confidence: 99%

Mining of rich iron ore deposits of complex structure under the conditions of rock pressure development

et al. 2020

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The purpose of research is to increase the ore mass extraction ratio when mining rich iron ores by changing the shape of the stope chamber, as well as to substantiate its stable parameters under the conditions of the rock pressure manifestation. Used in mines existing methodologies for determining the structural elements of mining system are based on calculated equivalent spans of outcropping the stope chambers, which have a rectangular or tent shape. For the first time using the ANSYS software package, it has been determined that the formation of a compensation chamber of quasi-parabolic shape can significantly reduce the stresses concentration around the stope block. Thus, the formation of a stope chamber of a quasi-parabolic shape makes it possible to reduce vertical stresses as compared to horizontal ones without increasing horizontal pressure. When mining the extraction block, it is proposed to form the stope chamber of a quasi-parabolic shape with geometric parameters that directly depend on the parameters of the deposit, the depth of mining, and the direction of main stresses action. Dependences have been determined of the stresses value on the depth of mining and the physical properties of rocks, as well as on the length along the strike of the ore deposit. Thus, depending on the mining depth and length along the strike, rock pressure on the stope chamber of a quasi-parabolic shape decreases under non-uniform loading. The formation of a stope chamber of a quasi-parabolic shape will increase by 1.2 – 1.5 times the volume of pure ore that is recovered from the block.

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Section: Introductionmentioning

confidence: 99%

Mining of rich iron ore deposits of complex structure under the conditions of rock pressure development

et al. 2020

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“…It is not difficult to establish this according to the technological schemes and methods of opening-up of a mine and ventilation, the preparation and transport schemes, the mining and security methods and maintaining excavations and the types of hoisting, etc. (Bondarenko et al, 2014;Stupnik et al, 2015;Aitkazinova et al, 2016;Kalinichenko et al, 2018).…”

Section: Literature Reviewmentioning

confidence: 99%

Multivariance Solutions for Designing New Levels of Coal Mines

Lozynskyi

Medianyk

Saik

et al. 2020

MGPB

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In this article, variants of technological designing of new mining enterprise levels for obtaining the skills of engineering task execution are considered. The complex approach for the justification of a mine's parameters is examined. The combinations of quantitative and qualitative parameters for designing new coal-face and preparation works, transport, ventilation, and draining-out of gases, pumping, and mineral deposits while keeping cost reduction in mind for all stages of mining enterprise operations are presented. The obtained results allow us to lay the foundations for optimizing the parameters of the development system and the rational order for the coal reserves, under the changing mining and geological conditions of coal field deposit development. Conclusions regarding the implementation of the multivariance solutions in new coal mine level designing are made on the basis of undertaken investigations. The obtained results with sufficient accuracy in a practical application can be used to determine the development of new coal mine levels.

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“…When drawing and transporting ore, it is necessary to consider the most efficient flowsheets of extracting ore from the massif which are used or may be used in underground operations [1,5,13]. Deepening requires additional expenses to maintain safe conditions of draw workings as well as for transporting ore to the shaft and winding [3,7].…”

Section: Introductionmentioning

confidence: 99%

Investigation and optimization of main materials consumption when mining iron ores at deep levels of the Underground Mine Group of the PJSC “ArcelorMittal Kryvyi Rih”

Stupnik

Kalinichenko

et al. 2020

E3S Web Conf.

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The work considers conditions of deep levels of the Underground Mine Group for underground ore mining (as underground mines) of the Mining Department of the PJSC “ArcelorMittal Kryvyi Rih” (the PJSC “ArcelorMittal Kryvyi Rih”). The research aims to improve indicators of mined ore mass extraction when mining rich iron ores through studying and optimizing consumption of explosives, enhancing mining technology to provide fulfilment of the underground iron ore mining program. During the research, there are analyzed mining geological and technical conditions of the deposit mining as well as current technologies of iron ore mining at the Underground Mine Group of the PJSC “ArcelorMittal Kryvyi Rih”. The work analyzes the achieved indices and consumption of explosives for drilling and blasting at the Underground Mine Group. The mining geological and technical conditions of the deposit mining as well as current technologies of mining, parameters of preparatory operations, the nomenclature and qualitative characteristics of many types of explosives are determined to have changed. This complicates planning consumption of explosives and making their estimates for work sites. However, this is a reason for selecting highly efficient technology and machinery in deteriorating mining and geological conditions of operating at over 1200 m depths. The work determines dependencies of a stress value on a mining depth and physical properties of rocks, as well as parameters of drilling and blasting operations considering the stress-strain state of the massif under high rock pressure at deep levels of the Mining Group of the PJSC “ArcelorMittal Kryvyi Rih”.

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Features of underlying levels opening at “ArsellorMittal Kryvyi Rih” underground mine

Cited by 25 publications

References 0 publications

Mining of rich iron ore deposits of complex structure under the conditions of rock pressure development

Mining of rich iron ore deposits of complex structure under the conditions of rock pressure development

Multivariance Solutions for Designing New Levels of Coal Mines

Investigation and optimization of main materials consumption when mining iron ores at deep levels of the Underground Mine Group of the PJSC “ArcelorMittal Kryvyi Rih”

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