Mathematical modelling of operation of the hydraulic support system of the powered support sections with impulse-free continuous regulation of its resistance to the roof rock lowering

Gabov, V. V.; Babyr, N. V.; Задков, Д. А.

doi:10.1088/1757-899x/1064/1/012045

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…The mathematical model of the powered roof support's hydraulic prop was based on two equations-the forces and the flows equations [38,39]. In order to record the work of the prop mathematically, the forces acting on it are taken into account.…”

Section: Resultsmentioning

confidence: 99%

The Process of Developing Model Research for the Technology of Obtaining Energy Resources

Szurgacz

Borska²,

Pospíšil

et al. 2023

Processes

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The current problems associated with the maintenance of hard coal longwall mining dependon the application or use of extraction technologies. In order to make the best use of these technologies,a new approach based on simulation studies is necessary. This paper aims to develop a mathematicalmodel for the powered roof support’s operation. The three groups of professionals involved inthe testing of the roof support were involved in the work on changing the hydraulic system of thepowered roof support stand. These professionals were powered roof support’s designers, researchersand users. The research subject was the development of a mathematical model as a starting pointfor conducting simulations. The model is based on d’Alembert’s principle and the equation of thebalance of flow rates. Based on the developed model, it is possible to determine the pressure inthe space under the piston of the hydraulic prop. The results obtained in the simulations are thebasic assumptions for the development of a prototype that would solve the current problems inthe hydraulic systems of powered roof supports. The adopted research methodology assumed thedevelopment of a mathematical model, simulation in the MATLAB environment and verificationof the model on a test stand. The obtained results of simulation tests based on the developedmathematical model were confirmed in bench tests. Simulation and bench tests determined thecorrectness of the assumptions made for the development of the prototype model. Based on theanalysis of the results, the nature of the work of the future prototype has been predetermined. Thenext stage will be the testing of the prototype, which is to be included in the hydraulic system of theprop of powered roof support in the future. The model mentioned before is the baseline model, andit will be modified depending on the application of the future design in real conditions. Simulationstudies of powered roof support will allow the structure that is used currently to be optimised, so asto adapt it to increasingly difficult working conditions.

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Section: Resultsmentioning

confidence: 99%

The Process of Developing Model Research for the Technology of Obtaining Energy Resources

Szurgacz

Borska²,

Pospíšil

et al. 2023

Processes

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“…Chromites: there are practically no proven reserves of metallurgical grades [18,19]. Bauxite: the vast majority is mined in the Urals.…”

Section: Resultsmentioning

confidence: 99%

Location of deposits of non-metallic ores in Russia and the technogenic impact of mining on the environment

Kozhiev

Gabaraev

Khaliev

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article substantiates the need to strengthen the mineral resource base for the production of non-ferrous metals through the involvement in the operation of substandard raw materials, primarily those stored in tailings dumps for the enrichment of metal ores. The results of the analysis of reserves of ore deposits are presented in comparison with the situation in the world. Quantitative data on the state of the mineral resource base of non-ferrous metal ores in Russia and the provision of industry with metal raw materials are given. The role of mineral resources in protecting the geopolitical interests of Russia is shown. It is noted that Russia lags behind technologically developed countries in a number of indicators of production and consumption of mineral resources. It is concluded that the development of technogenic deposits using innovative technologies is a real step towards strengthening the mineral resource base of Russia, therefore, research on the direction of mining mentioned in the article is relevant.

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“…In order for the support to perform its functions properly, it is important to select it correctly, taking into account the mining and geological conditions and parameters of the wall. Recent research in the development of supports is presented in the works [48][49][50][51][52][53][54][55][56][57]. Currently, leg and protection supports with a lemniscate canopy guiding mechanism are commonly used.…”

Section: Introductionmentioning

confidence: 99%

Development of a Hydraulic System for the Automatic Expansion of Powered Roof Support

Szurgacz

Borska²,

Diederichs³

et al. 2022

Energies

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A mechanical support in a longwall complex requires proper supervision and control of operating parameters because it is responsible for the safety of machines and workers. Its main functions are to protect the excavation against the adverse effects of rock mass and to move it along with the operational progress of the shearer and the scraper conveyor. In the era of Industry 4.0 as well as green economy and sustainable development, the development of machines and devices included in the longwall complex is an important area of invention. When it comes to the mechanical support included in the longwall complex, the authors propose changes to the hydraulic control system. The main purpose of the work was to develop a system that can automatically expand the legs of the powered support. Tests were carried out under real conditions while equipping the support section with a prototypical hydraulic system and with a system monitoring the correct operation of the prototype. This article presents the development of a prototypical installation under real conditions for testing on a longwall. The innovative solution proposed by the authors consisted of introducing a prototypical double valve block into the hydraulic system of the housing, which enables the function of automatic section expansion. The authors proposed a solution aimed at shortening the work time of the powered-support-section operator. The research results made it possible to evaluate the usefulness of the proposed solution. This type of solution can be considered technical support in the process of coal mining in an underground mine. Analysis presented in this paper, along with results from research conducted and its conclusions, can be of practical help to enclosure users to improve reliability and achieve optimal performance.

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Mathematical modelling of operation of the hydraulic support system of the powered support sections with impulse-free continuous regulation of its resistance to the roof rock lowering

Cited by 7 publications

References 15 publications

The Process of Developing Model Research for the Technology of Obtaining Energy Resources

The Process of Developing Model Research for the Technology of Obtaining Energy Resources

Location of deposits of non-metallic ores in Russia and the technogenic impact of mining on the environment

Development of a Hydraulic System for the Automatic Expansion of Powered Roof Support

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