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Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach

An essential stage of mine design is an estimation of the steps of the first and periodic roof caving in longwall mines. Generally, this is carried out using the field experience and can be much enhanced by numerical simulation. In this work, the finite-difference method was applied coupled with the...

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Autores principales: Eremin, Mikhail, Esterhuizen, Gabriel, Smolin, Igor
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304672/
https://www.ncbi.nlm.nih.gov/pubmed/32566364
http://dx.doi.org/10.1016/j.ijmst.2020.01.006
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author Eremin, Mikhail
Esterhuizen, Gabriel
Smolin, Igor
author_facet Eremin, Mikhail
Esterhuizen, Gabriel
Smolin, Igor
author_sort Eremin, Mikhail
collection PubMed
description An essential stage of mine design is an estimation of the steps of the first and periodic roof caving in longwall mines. Generally, this is carried out using the field experience and can be much enhanced by numerical simulation. In this work, the finite-difference method was applied coupled with the continuum damage mechanics (CDM) approach to simulate the stress-strain evolution of the rock mass with the underground opening during coal extraction. The steps and stages of roof caving were estimated relying on the numerical simulation data, and they were compared with the field data from several operating mines in the south of the Kuznetsk Basin, Russia. The dependence of the first roof caving step in simulation linearly correlates with field data. The results correspond to the actual roofs of longwall panels of the flat-dipping coal seams and the average rate of face advancement is approximately 5 m/day.
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spelling pubmed-73046722020-07-01 Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach Eremin, Mikhail Esterhuizen, Gabriel Smolin, Igor Int J Min Sci Technol Article An essential stage of mine design is an estimation of the steps of the first and periodic roof caving in longwall mines. Generally, this is carried out using the field experience and can be much enhanced by numerical simulation. In this work, the finite-difference method was applied coupled with the continuum damage mechanics (CDM) approach to simulate the stress-strain evolution of the rock mass with the underground opening during coal extraction. The steps and stages of roof caving were estimated relying on the numerical simulation data, and they were compared with the field data from several operating mines in the south of the Kuznetsk Basin, Russia. The dependence of the first roof caving step in simulation linearly correlates with field data. The results correspond to the actual roofs of longwall panels of the flat-dipping coal seams and the average rate of face advancement is approximately 5 m/day. 2020 /pmc/articles/PMC7304672/ /pubmed/32566364 http://dx.doi.org/10.1016/j.ijmst.2020.01.006 Text en This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Eremin, Mikhail
Esterhuizen, Gabriel
Smolin, Igor
Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title_full Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title_fullStr Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title_full_unstemmed Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title_short Numerical simulation of roof cavings in several Kuzbass mines using finite-difference continuum damage mechanics approach
title_sort numerical simulation of roof cavings in several kuzbass mines using finite-difference continuum damage mechanics approach
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304672/
https://www.ncbi.nlm.nih.gov/pubmed/32566364
http://dx.doi.org/10.1016/j.ijmst.2020.01.006
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