Reliability analysis of the main conveyor system in underground coal mine to determine the maintenance schedules

Gorai, Amit Kumar; Kumar, Pritam; Patel, Ashok Kumar

doi:10.1504/ijmme.2017.085838

Cited by 2 publications

(2 citation statements)

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“…The intensification of mining operations in coal mines is associated with the introduction of highperformance long walls [6,7], in which, as a rule, productive conveyor transport systems are applied [8].…”

Section: Introductionmentioning

confidence: 99%

Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine

Lubenets,

Koroviaka,

Snigur

et al. 2023

Nauk. visn. nat. hirn. univ.

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Purpose. Increasing the efficiency of the conveyor transport system of the mine due to the application of rational parameters, which are calculated objectively on the basis of the reliable output data of random freight flow in the conveyor transport line, taking into account the velocity of minerals transportation, including a perfect theoretical model application of the freight flow distribution. Methodology. Complex research: - statistical studies on the actual distribution of random freight flow in the highly productive stages of the PSU Mine “n.a Heroiv Kosmosu” PJSC “DTEK Pavlohradvuhillia”; - description of histograms of the distribution of random freight flow by various indicative algebraic functions, normal and gamma distribution of a random variable and a specially constructed function with separately defined parameters of its branches; - analysis of research results regarding the correctness of the theoretical model of the distribution of random freight flow according to various criteria of genuineness, a center of grouping, amplitude, velocity of rise and fall, and deviation. Findings. A perfect theoretical model was built in the form of an indicative algebraic function, whose branches are described by the normal distribution law of a random variable with separately determined parameters. It describes well the distribution of random freight flow in the conveyor transport line of the mine and ensures the determination of its parameters by the methods of probability theory. Originality. A theoretical model of the distribution of random freight flow in the conveyor transport line of the mine has been obtained for the first time, which describes well various cases of its distribution, including symmetric and asymmetric ones, and provides the determination of the freight flow parameters by the methods of probability theory. Practical value. The actual value of the coefficient of nonuniformity of the freight flow in the conveyor transport line of the mine, which was determined by a perfect theoretical model, exceeds, by almost a quarter, the value inherent in the model accepted in practice, the normal law of the distribution of a random variable. The coefficient of nonuniformity of the freight flow in the highly productive longwalls of only the specified mine reaches a value of 2.012, which already exceeds the normative value limit for conveyor transport lines along horizontal and inclined preparatory workings of mining areas (2.0). Reliable initial data on the variation of the random freight flow in the conveyor transport line of the mine, which is substantiated by a perfect theoretical model of its distribution, have a positive effect on the calculation of its parameters and contribute to increasing the efficiency and reliability of the functioning of the conveyor transport system.

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Section: Introductionmentioning

confidence: 99%

Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine

Lubenets,

Koroviaka,

Snigur

et al. 2023

Nauk. visn. nat. hirn. univ.

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“…Чем больше производительность (десятки тысяч кубических метров в час) и меньше длина, тем эффек-тивнее является применение ленточных конвейеров (Zhao & Zhu, 2014;Gorai, Kumar, & Patel, 2017).…”

Section: Introductionunclassified

Substantiation of the method for constructing the diagram of the horizontal belt conveyor tightness

Koroviaka¹,

Lubenets²

2017

Min. miner. depos.

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Purpose. The method for constructing the diagram of the conveyor belt tightness, which satisfies the fundamental conditions of the mechanical system equilibrium and takes into account the influence of its centrifugal forces has been substantiated. Methods.The horizontal conveyor belt tightness was determined experimentally, which allowed to draw the corresponding diagram.Findings. Regularities of the conveyor belt tightness distribution in a belt conveyor are established and a method for constructing a tightness diagram taking into account the influence of its centrifugal forces is developed.Originality. It is established that in a conveyor belt: -transmission of the traction force to the conveyor belt is carried out with a constant reaction on the drive station; -the tightness of the conveyor belt in the points of contact with the drive unit changes reciprocally; -the extension of the conveyor belt does not change. Practical implications.The method for constructing the diagram of conveyer belt tightness helps to increase efficiency of exploitation of the conveyor transportation-technological charts at mining enterprises.

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Reliability analysis of the main conveyor system in underground coal mine to determine the maintenance schedules

Cited by 2 publications

References 0 publications

Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine

Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine

Substantiation of the method for constructing the diagram of the horizontal belt conveyor tightness

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