Elastoplastic problem for noncircular openings under Coulomb’s criterion

Protosenya, A. G.; Карасев, М. А.; Belyakov, N. A.

doi:10.1134/s1062739116010125

Cited by 16 publications

(6 citation statements)

References 2 publications

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“…Currently, in various parts of the town, cracks are being formed and developed on buildings that have been in operation for decades, despite the fact that such processes were not observed even during intensive mining operations. Rock displacement is the most important factor determining the steady state of both underground and surface objects [7]. In this case, the magnitude of ground surface displacements will depend on the deformation characteristics of the crushed moistened rocks.…”

Section: Justification Of the Research Relevancementioning

confidence: 99%

Investigation of deformation characteristics impact of water-saturated rocks on the ecology of the coal-mining region

Dmitrienko¹,

Dmitrienko²,

Kokunko³

et al. 2023

E3S Web of Conf.

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The purpose of the research is to evaluate the deformation properties of water-saturated clay shale to determine the displacements of the earth's surface. The analysis of the impact of mining on the environmental situation of town Shakhty in Rostov region was done. It is noted that the closure of coal mines and pumping termination of underground water led to flooding of the developed spaces of mining enterprises. This led to a change in the mechanical characteristics of clay rocks, their softening and compaction under the influence of rock pressure. Taking into account the significant capacity of clay shale in the structure of the rock mass and the technology of mining coal seams, there are currently surface deformations and the formation of cracks in the structures of buildings. According to the results of experimental studies, the deformation characteristics of clay shale under prolonged moistening have been established, affecting the precipitation of the foundations of buildings and, accordingly, lead to the formation of defects in buildings and structures. The obtained characteristics of fragmented clay shale can be used for modeling the stress-strain state of a rock mass and the development of deformations on the earth's surface by the finite element method.

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Section: Justification Of the Research Relevancementioning

confidence: 99%

Investigation of deformation characteristics impact of water-saturated rocks on the ecology of the coal-mining region

Dmitrienko¹,

Dmitrienko²,

Kokunko³

et al. 2023

E3S Web of Conf.

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“…The results of a retrospective analysis of literature data and data of numerical modeling [2,15] of rock bursts events showed that the burst-dangerous state of rocks occurs when the value of relative normal deformations ε 1 =(3.5-7.1)•10 -3 and ε 3 =(1.2-4.3)10 -3 at depths from 650 to 300 m.…”

Section: аmentioning

confidence: 99%

Geodynamic monitoring and its maintenance using modeling by numerical and similar materials methods

et al. 2019

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The paper describes the fundamental issues of deformation monitoring systems and instrumental methods for measuring the stress-strain state of the rock massif based on the use of three-component strain sensors developed by specialists from the University of Mines and Avangard OJSC. One of the main tasks of the developed systems is the prediction and prevention of possible dynamic manifestations of rock pressure in rockburst-hazardous deposits.

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“…The mechanisms of stress and strain were different for the elements within the block and for the interacting elements of adjacent blocks, which was the model of fracturing within the continuous medium theory, where the stress and strain distribution function was continuous. A similar approach to resolving the problems of geomechanics is widely used in the engineering practice [28][29][30][31][32][33][34]. The change in the main maximum stress inside of the pillar is assessed for pillars with a width between 4 and 12 m with increments of 1 m.…”

Section: The Geomechanical Model Of a Pillar In A Fractured Rock Massifmentioning

confidence: 99%

Predicting the Stress-Strain State of the Fractured Rock Massif on the Example of Interchamber Pillars

Trifonov*,

Emelyanov,

Sinegubov

2019

IJITEE

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The article describes the finding of the qualitative differences in the formation of the stress-strain state of a disturbed rock massif on the example of interchamber pillars with various methods of accounting for the structural disturbance and different spatial geometry of the cracks. Three numerical models are created with different methods of accounting for the disturbances in the massif continuity: in the first model, the strength of the massif is described by the Hoek and Brown criterion; the second and the third models are rock massifs for which violations in the continuity are formed explicitly, using ready-made templates of the systems of cracks presented in the Phase2 software product. The results obtained for the different models illustrate the inaccuracies occurring in assessing the disturbance of rock massif using score criteria. Models with underrated strength properties of the rock inaccurately describe the real mechanisms of the fractured massif: the qualitative description is not consistent with the results of field observations and geological surveys of rocks in general.

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Elastoplastic problem for noncircular openings under Coulomb’s criterion

Cited by 16 publications

References 2 publications

Investigation of deformation characteristics impact of water-saturated rocks on the ecology of the coal-mining region

Investigation of deformation characteristics impact of water-saturated rocks on the ecology of the coal-mining region

Geodynamic monitoring and its maintenance using modeling by numerical and similar materials methods

Predicting the Stress-Strain State of the Fractured Rock Massif on the Example of Interchamber Pillars

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