Analytical study of the bending of isotropic plates, inhomogeneous in thickness

Plevako, V. P.; Потапов, Володимир Олексійович; Kycenko, Viktor; Lebedynecj, Ighor; Pedorych, Iryna

doi:10.15587/1729-4061.2016.75052

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…To increase mined ore volumes that directly impact economic indicators, it is reasonable to mine complex structured ore bodies by the selective open stope method according to the developed classification [4,24,37]. Application of the selective open stope system enables significant enhancement of quality of the useful component in the mined ore as compared with the bulk caving system and decrease of mining costs when applying the mining-and filling system.…”

Section: Resultsmentioning

confidence: 99%

Selective mining of complex stuctured ore deposits by open stope systems

et al. 2019

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The article studies stability of intervening pillars at underground selective mining of complex structured ore bodies of Kryvyi Rih iron ore basin applying open stope systems that will enable the increased useful mineral component content in the mined ore mass. When calculating an exposure span, the current methods of determining room system constructive elements do not consider dirt thickness. So, it is essential to develop methods of determining room system constructive elements for mining complex structured ore bodies to provide stability of stope exposures. When mining a mine block, stoping is suggested to be fulfilled gradually from the footwall to the hanging wall of the ore body by room-and-pillar methods leaving a dirt or ore inclusion in the block. This enables decrease in concentrating tension and compression stresses in the middle part of the dirt or ore inclusion resulting in its 1.5 – 2.0 times greater stability. There is also determined that the stope stability is impacted by the horizontal thickness of the inclusion, the hardness ratio and the order of stoping in a mine block. Application of open stope methods in selective mining of complex structured ore bodies of Kryvyi Rih iron ore basin enables increased quality of the mined ore mass without significant capital and operating costs and results in better environment of the region.

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Section: Resultsmentioning

confidence: 99%

Selective mining of complex stuctured ore deposits by open stope systems

et al. 2019

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“…To solve the problem of escalating the iron content and reducing ore losses in mining deposits with complex structured ore bodies, it is expedient to apply the approach proposed in [27,28]. The authors suggest modernization of traditional concentrating processes through introducing hydrometallurgical and chemical treatment which enhances concentration efficiency due to use of other kinds of energy.…”

Section: Methodsmentioning

confidence: 99%

Selective underground mining of complex structured ore bodies of Kryvyi Rih Iron Ore Basin

et al. 2018

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Selective mining of complex structured ore bodies will enable increased iron content in the mined ore mass in underground mining at Kryvyi Rih iron ore basin applying the existing mining systems. The article determines the way the grade changes in a mine block of a complex structured ore body when applying bulk and selective mining as well as factors influencing indices of extracting ore mass from the block. The investigation results prove that it is reasonable to mine complex structured ore deposits with barren inclusions applying selective mining if the iron content in the block varies from 64 to 67% and horizontal thickness of the barren inclusion makes 4 – 12 m. At that, the thickness ratio should not exceed 0.3. Stoping methods should be applied to receive high indices of ore mass extraction. There is determined an ore/barren inclusion-to-ore body thickness ratio considering the dilution factor that confirms practicability of selective mining of complex structured ore bodies. Selective mining of complex structured ore deposits of Kryvyi Rih iron ore basin applying open stoping enables increasing the mined ore mass quality without considerable capital and operating costs and, consequently, staying on the market and enhancing the environmental situation in the region.

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“…To settle the problem of iron content increase and ore loss decrease when mining deposits represented by complex structured ore bodies, it is reasonable to apply the method suggested in [25][26][27][28]. The authors suggest modernization of traditional concentrating through hydrometallurgical and chemical processing that enhances efficiency of concentration for the account of using other energy kinds.…”

Section: Introductionmentioning

confidence: 99%

Mining of Underground Deposits in Difficult Geological Conditions

Pysmennyi¹,

Rysbekov²,

Chukharev³

et al. 2020

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The article studies stability of intervening pillars at underground selective mining of complex structured ore bodies of Kryvyi Rih iron ore basin applying open stope systems that will enable the increased useful mineral component content in the mined ore mass. When calculating an exposure span, the current methods of determining room system constructive elements do not consider dirt thickness. So, it is essential to develop methods of determining room system constructive elements for mining complex structured ore bodies to provide stability of stope exposures. When mining a mine block, stoping is suggested to be fulfilled gradually from the footwall to the hanging wall of the ore body by room-and-pillar methods leaving a dirt or ore inclusion in the block. This enables decrease in concentrating tension and compression stresses in the middle part of the dirt or ore inclusion resulting in its 1.5-2.0 times greater stability. There is also determined that the stope stability is impacted by the horizontal thickness of the inclusion, the hardness ratio and the order of stoping in a mine block. Application of open stope methods in selective mining of complex structured ore bodies of Kryvyi Rih iron ore basin enables increased quality of the mined ore mass without significant capital and operating costs and results in better environment of the region.

show abstract

Analytical study of the bending of isotropic plates, inhomogeneous in thickness

Cited by 6 publications

References 13 publications

Selective mining of complex stuctured ore deposits by open stope systems

Selective mining of complex stuctured ore deposits by open stope systems

Selective underground mining of complex structured ore bodies of Kryvyi Rih Iron Ore Basin

Mining of Underground Deposits in Difficult Geological Conditions

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