Explanation of the cluster structures melting mechanism and their influence on the molten state’s physical and chemical nature

Shaikhova, G. S.

doi:10.31643/2021/6445.08

Cited by 3 publications

(3 citation statements)

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“…the singularity arises. In integrals with a variable lower limit, if the lower limit fell in the middle of the pair segment m y 2 , then the corresponding member of the sum was also calculated analytically [ [9], [10], [11]].…”

Section: Experimental Partmentioning

confidence: 99%

Numerical modeling of the task of support tension near cleaning

Shaikhova¹,

Belomestny²,

Mergembaeva³

2022

KIMS/CUMR/MShKP

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The problem of stresses and displacements of an oblique-layered massif near a mine working, which is located entirely in one of the rock layers, is considered when the mine is tested by the effects of cleaning works in a coal seam. This effect is taken into account by specifying a system of normal and shear forces at the boundary of the lower layered half-plane with a hole. The problem is solved by imposing the complex Kolosov – Muehehelishvili potentials and Fourier integral transforms. Based on the method of Fourier integral transforms in the theory of elasticity, a system of integral with respect to normal and tangential contact forces is obtained for the case of two different layered half-surfaces. In this work, systems of integral equations are obtained in solving the problem of the reference pressure on an obliquely buried coal seam near the mine working. In this paper, the method of integral Fourier transforms in the theory of elasticity, obtained a system of integral with respect to normal and tangential contact forces for the case of two different layered half-surfaces.

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Section: Experimental Partmentioning

confidence: 99%

Numerical modeling of the task of support tension near cleaning

Shaikhova¹,

Belomestny²,

Mergembaeva³

2022

KIMS/CUMR/MShKP

Self Cite

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“…The immediate roof of the coal seams is most often represented by mudstones, more rarely siltstones and by sandstones in isolated cases; the main roof is usually composed of sandstones. Argillites predominate in the soil of coal seams [ [6], [7], [8], [9], [10]].…”

Section: Introductionmentioning

confidence: 99%

Justification of the stress-strain state’s parameters of the mine workings contours depending on the influencing factors

Demin¹,

Zhurov²

2022

KIMS/CUMR/MShKP

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The complication of mining and geological conditions is associated with the involvement in the development of areas and entire deposits with complex tectonics, an increase in the depth of development, the manifestation of dangerous dynamic effects of rock pressure, which necessitates the improvement of methods, systems, methods and means of supporting mine workings, as well as improving the quality of materials used for support. Mining and geological factors affecting the use of mining support include: the depth of occurrence, which determines the magnitude of the vertical and horizontal components of the rock pressure; layer thickness, developed deposit; bed angle; properties of the host rocks, structure and physical and mechanical properties of rocks and minerals. The paper presents the conduction of the analytical modelling of the rock mass stress-strain state around the active mine workings using the ANSYS software with the assessment of the influence of its cross-section shape and the angle of the coal seam fall on the value of the maximum stresses arising in the rock mass when the workings are supported with the anchoring support depending on the thickness of the easily collapsible rock layer at different lengths of anchoring.

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“… -is the angle between the normal to the element directed to the region of the elastic body and the axis OX ) [8][9][10].…”

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confidence: 99%

Investigation of the Stress State of Mine Workings Using Methods of Deformable Solid Mechanics

Shaikhova¹

2022

Eurasian phys. tech. j.

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The assessment of the reliability of a mining and technological scheme, taking into account the stress state of mine workings, depends on a combination of mining and geological, technical and technological factors. The article demonstrates the creation of a model of a rock mass and a scheme for calculating the stress state based on modern methods of mechanics of a deformable solid body.The object of study is a single mine working of great length, passed through the rock parallel to the strike of the coal seam (field drift) and located in the zone of influence of the support pressure. Due to the fact that the field drift is laid in the soil of the formation, which is a layered stratum in the zone of influence of clearing operations, the predominant load is the bearing pressure on the formation. The areas of application of the methods of complex potentials of integral equations and their combinations in solving applied problems are determined. The data of mine (field) measurements and observations, laboratory experiments and their generalizations are taken into account both when setting tasks and assigning boundary conditions, and when checking the results obtained. The mixed problem of the theory of elasticity about the contact stress on half-strips with varying along the longitudinal axis was solved; moving away from the ends, deformative properties, when these half-strips are clamped with friction between the layered half-planes.

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Explanation of the cluster structures melting mechanism and their influence on the molten state’s physical and chemical nature

Cited by 3 publications

References 0 publications

Numerical modeling of the task of support tension near cleaning

Numerical modeling of the task of support tension near cleaning

Justification of the stress-strain state’s parameters of the mine workings contours depending on the influencing factors

Investigation of the Stress State of Mine Workings Using Methods of Deformable Solid Mechanics

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