Change in stress-strain behavior of coal-rock mass during coal mining

Захаров, В. Н.; Shlyapin, A.V.; Trofimov, V. A.; Filippov, Yu. A.

doi:10.25018/0236-1493-2020-9-0-5-24

Cited by 2 publications

(1 citation statement)

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“…Unlike similar methods for assessing degassing productivity and volume of mine methane extraction, the authors' method allows us to quantify gas losses due to the failure of a local degassing network. The reasons may be different, but basically it is the failure of wells associated with the peculiarities of changes in the stress-strain state in the rock mass [68][69][70][71][72].…”

Section: Discussionmentioning

confidence: 99%

Technogenic Reservoirs Resources of Mine Methane When Implementing the Circular Waste Management Concept

Brigida,

Golik,

Voitovich

et al. 2024

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From a commercial viewpoint, mine methane is the most promising object in the field of reducing emissions of climate-active gases due to circular waste management. Therefore, the task of this research is to estimate the technogenic reservoirs resources of mine methane when implementing the circular waste management concept. The novelty of the authors’ approach lies in reconstructing the response space for the dynamics of methane release from the front and cross projections: CH4 = ƒ(S; t) and CH4 = ƒ(S; L), respectively. The research established a polynomial dependence of nonlinear changes in methane concentrations in the mixture extracted by type 4 wells when a massif is undermined as a result of mining in a full-retreat panel. And the distance from the face to the start of mining the panel is reduced by 220 m. For this reason, the emission of mine methane, in case of degasification network disruption in 15 days, can amount to more than 660 thousand m3 only for wells of type no. 4.

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Section: Discussionmentioning

confidence: 99%

Technogenic Reservoirs Resources of Mine Methane When Implementing the Circular Waste Management Concept

Brigida,

Golik,

Voitovich

et al. 2024

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Assessment of contour deformations of reused mine workings

Zakorshmenniy,

Kharitonov,

Yagel

et al. 2024

E3S Web Conf.

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The paper describes studies to assess the impact of high-intensity mining of flat-lying coal seams in difficult mining and geological conditions on the stability of reused development workings. A scheme for computer modeling of changes in the stress-strain state of a layered carbon rock mass, including development workings, at different positions of the working face is proposed. For the conditions of one of the operating mines of the Pechersk coal basin (Komi Republic, Russia), numerical experiments were carried out using the finite element method in the MIDAS / GTS NX software package. To describe changes in the geomechanical state of the described mining system, the Coulomb–Mohr criterion was used. The results of numerical studies made it possible to estimate the displacement values of the boundary areas of the development mine workings as the working face advances. The obtained estimates are confirmed by data from mine instrumental observations.

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Change in stress-strain behavior of coal-rock mass during coal mining

Cited by 2 publications

References 0 publications

Technogenic Reservoirs Resources of Mine Methane When Implementing the Circular Waste Management Concept

Technogenic Reservoirs Resources of Mine Methane When Implementing the Circular Waste Management Concept

Assessment of contour deformations of reused mine workings

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