Multivariance Solutions for Designing New Levels of Coal Mines

Lozynskyi, Vasyl; Medianyk, Volodymyr; Saik, Pavlo; Rysbekov, Kanay; Demydov, Maksym

doi:10.17794/rgn.2020.2.3

Cited by 41 publications

(32 citation statements)

References 39 publications

(35 reference statements)

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“…Option 2 is a method of calculations according to the mining-and-transport complex project of the Kushmurun open-cut colliery, implemented as part of an automated design approach based on the application of the simulation modelling method [21]- [23]. The data obtained in the first calculation option are taken as the initial data for it.…”

Section: Resultsmentioning

confidence: 99%

Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics

Uteshov¹,

Galiyev²,

Galiyev³

et al. 2021

Min. miner. depos.

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Purpose. The research purpose is to develop and adapt the existing scientific-methodological, as well as software and information base for managing the geotechnological complexes to implement the process approach at the level of design and operation of mining-and-transport complexes during opencast mining. The development is associated with the coverage of more and more relevant options for excavating-conveying, as well as excavating-automobile-conveying mining-and-transport systems used in quarries. Methods. The methodology for managing the geotechnological complexes involves an adequate step-by-step accounting and appropriate operational regulation of all the main factors in specific mining-engineering, mining-geometrical, mining-and-geological, economic and organizational conditions. The method of simulation logical-statistical modelling of mining-and-transport processes is used as the main method. Findings. The results indicate that simplified analytical approaches and inadequately considered factors that have a significant impact on the efficiency of mining operations lead to significant errors (10-20% or more) that determine the real practical profitability of the mineral deposits development. Originality. Scientific novelty is an integrated approach to a single research object, which is a geotechnological complex, a unique simulation logical-statistical modelling of mining-and-transport processes, the economics of process management, as well as integrated and corporate process management. Practical implications. The obtained results of an integrated technical and technological audit of a project for mining the coal deposit, with sufficient accuracy for practical application, will ensure the methodological base development for the designing, planning and management of mining and mining-transport operations, as well as an increase in the efficiency of scientific and scientific-practical research in this direction when solving the practical tasks of mining sector.

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Section: Resultsmentioning

confidence: 99%

Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics

Uteshov¹,

Galiyev²,

Galiyev³

et al. 2021

Min. miner. depos.

Self Cite

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“…Schemes of conjunctive influence have been developed on the deformation-strength characteristics of lowering rocks of the roof (with their structural disturbances) and fastening constructions with different resistance modes. At this stage of the research, a transition from the overall qualitative pattern of such an interaction to quantitative assessments of parameters is deemed necessary [14], [15]. This is to develop methods of determining the rational deformationstrength characteristics of a fastening system and its main constituent components depending on the geomechanical factors of maintaining the preparatory mine work-ing [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Development and testing of an algorithm for calculating the load on support of mine workings

Bondarenko¹,

Kovalevska²,

Cawood³

et al. 2021

Min. miner. depos.

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Purpose. The purpose is to develop the calculation methods for minimizing the load on the fastening system of the preparatory mine working in difficult mining and geological conditions of its maintenance. Methods. By analysing the multivariate computational experiments on the study of the stress-strain state of the load-bearing elements of the ‘massif – support’ system in the preparatory mine workings by means of the finite-element method, as well as mine observations and measurements of displacement in the coal-overlaying rock formation. Findings. An algorithm has been developed for searching the rational modes of the fastening system resistance and methods for minimizing the load on the support of the preparatory mine working, maintained in very complex mining and geological conditions. Originality.The methodical principles have been developed of minimizing the load on the fastening system of the preparatory mine working, which are based on the use of a combination of stress-strain state studies of the ‘massif – support’ system by means of the finite element method and provisions of normative documents for calculating the dimensions of the dome of natural equilibrium of the mine working roof rocks. Practical implications. The operation modes optimisation of the load-bearing elements interaction of the mine working fastening system reduces the material and labour costs during its construction and increases its stability during operation. Keywords: analysis, calculation, optimization, support, preparatory mine working, stope works, roof rocks, collapse

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“…Being the most environmentally friendly utility product, natural gas will continue to play an important role in the energy supply and future development of the world's energy [1][2][3]. The fuel and energy complex in the developed countries of the world is a complex system of material production that contains a set of many subsystems covered the production, processing, distribution, storage and consumption of energy carriers [4,5].…”

Section: Introductionmentioning

confidence: 99%

Specific features of drilling mode with extendable working elements

et al. 2021

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The work is devoted to the calculation of the main technological parameters of a bit of a new patented design, the essence of which is to replace worn out working elements (carbide cutters or diamond-containing matrices) during drilling with a new, not blunt tool right at the bottom of the well. The need to correct the calculation method is associated with the design feature of the new crown, which consists in the fact that when using it, an annular bottom of a larger width is formed compared to serial crowns of the same outer diameter. Therefore, the known formulas for carbide and diamond drilling have been supplemented with appropriate correction values so that the ROPs when using new and serial bits are the same during full development. So, when using carbide cutters as rock-cutting elements, a correction factor is introduced that increases the number of main cutters in the crown sectors of the first and second stages. In diamond cutting, it is necessary to increase the maximum speed of the tool, taking into account the mining technical conditions of penetration. Refined formulas for calculating the parameters of the drilling mode allow preserving the advantages of bits with extendable working elements and increasing the drilling speed by 1.7-1.8 times compared to existing serial bits.

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Multivariance Solutions for Designing New Levels of Coal Mines

Cited by 41 publications

References 39 publications

Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics

Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics

Development and testing of an algorithm for calculating the load on support of mine workings

Specific features of drilling mode with extendable working elements

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