Optimization of Load-Bearing Elements Interaction of the “Massif – Support” System in the Preparatory Mine Workings in the Coal Mining of Ukraine

Bondarenko, Volodymyr; Kovalevska, Iryna; Symanovych, H.; Barabash, Mykhailo; Salieiev, I; Energy”, Llc “Dtek; “Donetsksteel”, Pjsc

doi:10.31474/1999-981x-2020-1-7-18

Cited by 1 publication

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“…Objectively high requirements for support and the severity of mining-geological conditions necessitate the creation of new means of supporting mine workings with a significant increase in the stability of parameters, as well as operating characteristics. In recent years, the research works of V. I. Bondarenko [11,12], I. A. Kovalevska [11][12][13], O. P. Krukovskyi [14][15][16], V. Ia.…”

Section: Introductionmentioning

confidence: 99%

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Results of research on the stability of mine workings, fixed by arched supports made of composite materials, in the conditions of the Pokrovske Mine Administration

Bondarenko

Kovalevska

Sheka

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The paper provides a detailed analysis of innovative technologies for maintaining mine workings at great depths. The possibility of using composite materials (in particular, carbonfiber-reinforced plastic) as fastening elements is of special attention. It has been conducted a comparative analysis of the physical-mechanical properties of carbon fiber-reinforced plastic and low-alloy steel, traditionally used for the manufacture of frame support. To conduct a comparative analysis of the stress-strain state, a series of models has been developed and computer modelling has been performed by the finite element method using the Ansys Mechanical software product. In mining-geological conditions Pokrovske Mine Administration, three types of supports, namely, basic, composite with variable section and composite with constant section, have been studied. The initial and boundary conditions, as well as the assumptions and idealization of the model, have been substantiated. A comparative analysis of the stress intensity confirms the advantage of the proposed frame supports made of composite materials in terms of limiting the zones with maximum values. Laboratory research, conducted on a 3D-printer, testifies to the adequacy of conducted modelling. The reliability of the obtained values makes it possible to recommend an innovative support using carbon fiber-reinforced plastic for conducting a mine experiment.

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Section: Introductionmentioning

confidence: 99%

“…In recent years, the research works of V. I. Bondarenko [11,12], I. A. Kovalevska [11][12][13], O. P. Krukovskyi [14][15][16], V. Ia. Kyrychenko [17] and others have been devoted to the development and implementation of new types of supports.…”

Section: Introductionmentioning

confidence: 99%