Explicit representation of rock reinforcement in 3D DEM models for foliated ground

Karampinos, Efstratios; Hadjigeorgiou, John; Pierce, Mark D.

doi:10.17159/2411-9717/2018/v118n12a2

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…The theoretical basis of the rock pressure parameters included modeling the stress-strain state of the coal pillars according to the classical laws of geomechanics [10], and the coal and rock massif near the roadways using the finite-element method, which is widely used to solve mining problems [11,12,13].…”

Section: Methodsmentioning

confidence: 99%

Rock Pressure Manifestation in Development Workings Advanced in a Thick Coal Seam

et al. 2020

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A research of rock pressure manifestations in the seam workings of seam 52 in “V. D. Yalevsky” mine is presented. It is shown that the inspected development workings advanced in a thick seam have a number of peculiarities determining the urgency of their stability research. It is noted that the researches are carried out in the workings subjected to coal extraction influence, as well as in the workings not subjected to that influence. A brief description of the research method including a visual examination of the mine workings and their support elements, instrumental studies of the border rock massif and the theoretical justification of the parameters of rock pressure are given. The following patterns: rock pressure manifestations mostly in the workings sidewalls, a positive time dynamics of rock pressure manifestations, and the increased intensity of manifestations in the workings roof after coal extracting in the face were recorded. The theoretical justification of rock pressure manifestations and the interpretation of the results of instrumental researches are given.

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Section: Methodsmentioning

confidence: 99%

Rock Pressure Manifestation in Development Workings Advanced in a Thick Coal Seam

et al. 2020

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“…An increase in the height of the working after the release of destroyed rock in the repaired section causes a decrease in the resistance of coal in the sides of the drift, increases the relative tension in the sides [8][9][10]. It is recommended that the increased part of the height of the sides in the workings after the release of the destroyed roof rocks be fixed with anchor support.…”

Section: Fig 7 Scheme For Determining the Main Expected Parameters Of Collapses During Mechanical Processes Of Local Formation Of Collapsmentioning

confidence: 99%

Development of design solution for mine workings support repair and recovery in case of local massif deformations

2021

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The article describes the causes of occurrence and forms of geomechanical processes manifestation in surrounding coal-rock massif of mine workings supported by anchor support. Based on long-term field observations, six forms of typical deformations of the surrounding massif have been established. Design solutions to strengthen the anchor support or complete reinforcement of damaged sections of mine workings during geomechanical processes of local felling have been developed. They include: installation scheme, substantiation of parameters and list of used reinforcement elements; technology of work, a list of equipment used.

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“…Ferrero, 1995;Grasselli, 2005;Aziz and Jalalifar, 2007) or by structural elements formulated in the software (e.g. Malmgren and Nordlund, 2008;Liu, Huang, and Li, 2012;Gao, Stead, and Kang, 2015;Karampinos, Hadjigeorgiou, and Turcotte, 2016;Karampinos, Hadjigeorgiou, and Pierce, 2018;Bahrani and Hadjigeorgiou, 2018). Both approaches are valid, although the fine mesh size requirements for simulating rock reinforcement via material models are computationally intensive.…”

Section: Choice Of Modelling Software and Reinforcement Elementmentioning

confidence: 99%

Practical considerations in the modelling of resin-grouted rockbolts

Tomasone¹,

Bahrani

Hadjigeorgiou

2020

. S. Afr. Inst. Min. Metall.

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Explicit representation of rock reinforcement in 3D DEM models for foliated ground

Cited by 7 publications

References 8 publications

Rock Pressure Manifestation in Development Workings Advanced in a Thick Coal Seam

Rock Pressure Manifestation in Development Workings Advanced in a Thick Coal Seam

Development of design solution for mine workings support repair and recovery in case of local massif deformations

Practical considerations in the modelling of resin-grouted rockbolts

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