Modeling Top Coal Disintegration in Thick Seams in Longwall Top Coal Caving

The geomechanical model of the powered roof support-top coal-roof rock system is developed. For investigation of disintegration processes in top coal of thick seam, numerical modeling with finite element discretization of a study domain is carried out using the authors’ original code. The computatio...

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Bibliographic Details
Published inJournal of mining science Vol. 55; no. 2; pp. 247 - 256
Main Authors Klishin, V. I., Fryanov, V. N., Pavlova, L. D., Opruk, G. Yu
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2019
Springer
Springer Nature B.V
Subjects
Analysis
Caving
Coal
Coal industry
Coal mining
Computer applications
Conveyors
Disintegration
Earth and Environmental Science
Earth Sciences
Finite element method
Geomechanics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Longwall mining
Materials handling equipment
Mineral Mining Technology
Mineral Resources
Mining industry
Modelling
Rock masses
Rocks
Roofs
Seams
Stress concentration
Stress distribution
finite element method
stresses
Coal seam
disintegration
top coal
seam roof
numerical experiment
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Summary:The geomechanical model of the powered roof support-top coal-roof rock system is developed. For investigation of disintegration processes in top coal of thick seam, numerical modeling with finite element discretization of a study domain is carried out using the authors’ original code. The computational experiment reveals stress distribution in rock mass, as well as evaluates position, shape and size on uncontrolled caving zones in top coal.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739119025527