Determining conditions of using draglines in single-tier internal dump formation

Babets, Ye. K.; Адамчук, Андрій Андрійович; Шустов, Олександр Олександрович; Anisimov, Oleh; Dmytruk, O. O.

doi:10.33271/nvngu/2020-6/005

Cited by 7 publications

(8 citation statements)

References 8 publications

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“…The velocity of mining overburden benches in a complicated system directly depends on the dragline excavator performance and its face parameters. With a complicated non-transport mining system with upward and downward diggings using one dragline excavator, its performance drops by 15-20% unlike its operation with only downward digging [13]. This is due, first of all, to an increase in the angle of the dragline rotation and a more complex digging process during the upper mining of the bench.…”

Section: Determining a Link Between The Mining Rate Of The Stoping Be...mentioning

confidence: 99%

Substantiating the rational parameters for a complicated non-transport system when mining low-thickness fireclay deposits

Chebanov,

Sobko,

Petlovanyi

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The paper examines a complicated non-transport system for mining a gently sloping fireclay deposit using ESH-10/70 dragline excavators. The research purpose is to substantiate the technological scheme of stripping operations and determine their parameters to reduce the strip-mining costs. Theoretical research is performed using the following methods: methods of scientific analysis of theoretical research, as well as practices of project and production organizations; mining-geometric calculations; variant method for comparing and selecting a mining system. As a result, the dependence of the excavator block mining velocity on the entry way width has been determined, which makes it possible to study the relationship between mining and stripping equipment in time. The change in the re-excavation coefficient depending on the width of the dragline excavator entry way has been studied and its rational value has been determined. The practical value of the research results is in the substantiation of an effective system for mining a gently sloping fireclay deposit.

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Section: Determining a Link Between The Mining Rate Of The Stoping Be...mentioning

confidence: 99%

Substantiating the rational parameters for a complicated non-transport system when mining low-thickness fireclay deposits

Chebanov,

Sobko,

Petlovanyi

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Все це дозволило нам отримати модель оптимізації гірничого виробництва в умовах диверсифікації. Задача оптимізації може бути сформована так: необхідно збільшити кількість коштів від реалізації продукції при мінімізації кількості витрачених ресурсів S, цю задачу можна назвати оптимізацією способу виробництва та записати наступним чином = 0 1 3 → max; S = 1 + 3 (18) Таблиця 2 Основні показники життєзабезпечення шахт в умовах диверсифікації Назва показника Вираз продуктивність праці…”

Section: таблиця 1 основні дослідження присвячені світовому досвіду диверсифікації гірничого виробництваunclassified

“…Ми задаємо значення видобутку вугілля X та для вказаного обсягу виробництва визначаємо необхідну кількість ресурсів K,Q,L. Після цього підраховуємо суму цих ресурсів [17,18]. На наступному кроці від загальної суми ресурсів S віднімаємо суму трьох ресурсів S k .…”

Developing a model parameter optimization of coal mines under diversification

Khorolskyi¹,

Pochepov²,

Lapko³

et al. 2021

Coll. res. pap. nat. min. univ.

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Purpose. To propose a new methodological approach to optimizing the parameters of the functioning of coal mines in the context of diversification. The methods. The production flows of coal mines are considered, as well as production functions. To solve the problem of diversification of production, the relationship between the types of resources expended, as well as the level of production in the form of raw materials, was compared. Based on the production function of Cobb-Douglas, a model of life support for the operation of a coal mine is built, considering the possibility of diversifying the activity. Findings. For the first time, the paper proposes a model for optimizing the parameters of mining in the context of diversification, which demonstrates the ratio of production functions and resources. With the help of the developed model, it is possible to trace in time the efficiency of the use of production resources, to determine the volume of production, to calculate the main parameters of the functioning of coal mines, to study at the expense of which resources the increase in productivity is achieved. The originality. For the first time, the possibility of diversifying mining activities by changing production flows is considered. Methodological recommendations for assessing the production activity of the mining complex are given. In this work, for the first time, to improve the efficiency of coal mines functioning, the internal potential of the technological scheme is considered, and the components that form it are analyzed. This made it possible to form management decisions, which consist in determining the volume of production, as well as the ratio between the attracted resources necessary to ensure the specified volume of production, constant monitoring of the use of resources, by establishing a rational ratio between fixed assets, labor, material resources; as well as establishing the interchangeability of productive flows in the aggregate balance sheet. Practical implementation. For practical application, the paper proposes a method for determining the rational volume of production from the standpoint of optimizing the production activities of an enterprise, as well as the ratio of production resources to achieve a given scale of production. Thus, there is an increase in capital productivity with the same degree of use of fixed assets, labor, materials. For the full and effective use of the technology, a specific example was considered to determine the optimal method of manufacturing products for a coal mining enterprise.

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“…The processing of fine-grained materials is traditionally carried out in gravitational apparatus with a horizontal movement of the carrier flow: horizontal classifiers, deslimators, screw classifiers, decanters, horizontal settling tanks, etc. [1] Despite the mass nature of the work aimed at studying the process of falling solid particles in a stationary liquid, the process of motion of solid particles relative to a moving horizontal flow of a carrier slurry remains practically unexplored. Unprovenly considered that in a carrier horizontal flow solid particles move with a flow velocity [2].…”

Section: Introductionmentioning

confidence: 99%

Studying the interaction process of a solid particles flow with the hydraulic classifier flowing part

Bondarenko,

Shustov,

Adamchuk

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The paper provides a theoretical description of the solid particles movement process along with the horizontal flow of slurry within the hydraulic classifier flow part. Three modes of movement of solid particles are described: deceleration relative to the slurry flow at a constant speed or its increase, acceleration relative to the slurry flow at a decrease in its speed, with the speed of the slurry flow. The complex equation of solid particles motion in a horizontal co-flow of liquid. A graphic description of the process is given. A laboratory installation was developed to study the interaction of the hydraulic classifier flow part with the slurry flow. Experimental studies were carried out and quantitative process parameters were determined during the movement of rolled quartz solid particles in the size range < 1.8 mm and < 0.2 mm. For the first time in crisis economic conditions, in order to confirm the reliability of previously obtained analytical dependencies to determine the rational parameters of hydraulic disintegrators and determine the operational characteristics of equipment, full-scale experimental studies of the JPD 300-120 suction dredger equipped with an innovative ejector soil suction head with a jet disintegrator system were carried out.

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Determining conditions of using draglines in single-tier internal dump formation

Cited by 7 publications

References 8 publications

Substantiating the rational parameters for a complicated non-transport system when mining low-thickness fireclay deposits

Substantiating the rational parameters for a complicated non-transport system when mining low-thickness fireclay deposits

Developing a model parameter optimization of coal mines under diversification

Studying the interaction process of a solid particles flow with the hydraulic classifier flowing part

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