Increasing ecological safety during underground mining of iron-ore deposits

Khomenko, Oleh; Kononenko, Maksym; Myronova, Inna; Sudakov, Andrii

doi:10.29202/nvngu/2018-2/3

Cited by 30 publications

(26 citation statements)

References 12 publications

(12 reference statements)

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“…We introduce the designations respectively for the modulus of elasticity and Poisson's ratio of the shell and lining: Е 0 , μ 0 , Е f , μ f . Then the generalized stiffness characteristics (5) will be presented in the form:…”

Section: Methodsmentioning

confidence: 99%

“…The development of scientific methods to substantiate the design parameters of mine hoisting installations is the subject of scientific works, the analysis of which is given in work [3]. The researchers set the following tasks: to determine the influence of the geometric and stiffness characteristics of the reinforced drum structure [4], brake devices [5] on its stress-strain state, to develop the method for calculating design loads [6], to create engineering methods for determining the parameters of rational structures of working bodies of mine hoisting machines , to increase the cable capacity of a single-drum mine hoisting installation [7], to substantiate the parameters of equipment for dewatering ropes of mine hoisting installations [8], to improve the method of calculating power factors in the turns of the multilayer winding of rubber cable [9], to determine the effect of rubber cable parameters on the torsional stiffness of the winding body [10].…”

Section: Introductionmentioning

confidence: 99%

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Justification of the algorithm for selecting the parameters of the elastic lining of the drums of mine hoisting machines

et al. 2019

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When calculating the stress-strain state of a cylindrical drum of a mine hoisting machine loaded with a metal rope, the stiffness parameters of the elastic lining and frontal surface are taken into account. It is defined that, depending on the values of the radial and bending stiffness of the frontal surface, two zones can be distinguished. If the parameters of the frontal surface fall into the first of them, the stresses in the shell slightly differ from the stresses in the hinged supported shell. The second zone is characterized by a sharp (up to 70%) increase in stresses. An algorithm has been developed for selecting rational parameters of a lined drum, which allows to reduce the stresses in the metal shell by up to 20%.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Justification of the algorithm for selecting the parameters of the elastic lining of the drums of mine hoisting machines

et al. 2019

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“…The correlation coefficients of dependences (3) and (4) are equal to 0.97. For dependencies (5), (6), (7) and (8), the correlation coefficients are 0.97, 0.88, 0.97 and 0.89, respectively.…”

Section: Justification Of the Parameters For The Development Of Contimentioning

confidence: 99%

“…4. Thus, given the values of L, l/l n and Е r /γ n Н and using on one of the formulas (2), (4), (6), or (8), depending on the direction of the long face movement and the development conditions under consideration, one can find the corresponding value of maximum tension concentration factor in front of the breakage face (K y ) max , as well as the main load on the section of the mechanized support Р 0 from the weight of the rocks in the zone of the ultimate stress state over the long face. Further, from the found value (K y ) max from the graph in Fig.…”

Section: Justification Of the Parameters For The Development Of Contimentioning

confidence: 99%

Ecological aspects of managing the stressed-deformed state of the mountain massif during the development of multiple coal layers

et al. 2018

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The ecological consequences of long-term development of coal deposits for the components of the environment, buildings, communications and infrastructure facilities have been analysed. The stress-deformed state of the rock massif around the preparatory working in the development of multiple coal layers is determined. The parameters of the development of the contiguous layers in the conditions of the mines of the Lviv-Volyn Coal Basin are substantiated. The complex of nature protection measures allowing to reduce the negative consequences of disturbance of the earth’s surface in the development of multiple coal layers is substantiated.

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“…Обсяг капітальних вкладень на гірничі роботи у відсотках росте із збільшен-ням потужності шахт, також необхідно враховувати ризики пов'язані із забрудненням навколишнього середовища. [29,30,31].…”

Section: рисунок 3 приріст потужності шахт від обсягу інвестиційunclassified

State support of stability in Coal-Donbas regions

Mamaikin¹,

Pochepov²,

Fomychova³

et al. 2016

Fiziko-tehničeskie problemy gornogo proizvodstva

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Purpose. To develop a new approach to feasibility assessment mechanism of supporting production facilities of loss-making mines in Donetsk and Dnipropetrovsk regions. Methods. To solve the objective set, a complex approach was used including assessment of enterprise investment attractiveness, determination of production potential, definition of the ability to switch to a break-even mode. The process for planning ways to save the industrial potential of coal-mining regions may be considered as the reflection of multidimensional space (initial and design values) into the one-dimensional (amount of investment money). Findings. It has been established that on the stage of building a model for managing mine unprofitability decrease processes, it is necessary to overview 8-10 factorial features, which may determine the formation of economic potential, taking into consideration peculiarities of remaining deposit bedding and their quality, as integral assessment of mine potential in terms of (state and non-state) investment perception. The objective set comes down to selection of the minimum number of factors, which would the most adequately reflect the mine internal potential expressed by economic value addedas a consequence of interaction of factors of coal mine economic activities in specific mining, geological and technological conditions. Originality. The academic novelty is that as a complex component of the state of the loss-making mine, it is reasonable to use an indicator of economic reliability, which synthesizes the capacity of links, economic level of technical and economic indicators and the amount of remaining deposits. The latter determine the residual life of the mine, physical content of the proposed indicators is not identical, and it Физико-технические проблемы горного производства 2020, вып. 22 153 is this fact, which allows for their joint use to obtain a more complete estimate than when using any single indicator. Practical implications. Practical significance includes actual assessment of the state of Donbass coal enterprises and determination of marginal break-even indicators, which allowed for the formation of recommendations for attracting financial resources.

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Increasing ecological safety during underground mining of iron-ore deposits

Cited by 30 publications

References 12 publications

Justification of the algorithm for selecting the parameters of the elastic lining of the drums of mine hoisting machines

Justification of the algorithm for selecting the parameters of the elastic lining of the drums of mine hoisting machines

Ecological aspects of managing the stressed-deformed state of the mountain massif during the development of multiple coal layers

State support of stability in Coal-Donbas regions

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