Assessment of coal pillar behaviour at great depth using numerical models

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F19%3A00519191" target="_blank" >RIV/68145535:_____/19:00519191 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Assessment of coal pillar behaviour at great depth using numerical models
Original language description
Room and Pillar method was used to develop shaft protection pillar, below 850 m from the surface at CSM mine of Upper Silesian Coal Basin of Czech Republic. First panel V was developed on rhomboid shaped pillars of different sizes by driving roadway of 3.5-4.5 m in height and 5.2 m in width. Field study was conducted using different geo-technical instruments. This study revealed that core of the pillar is softening too due to yielding characteristics. Further, to understand the behaviour of coal pillar, numerical modelling was carried out using FLAC3D. Mohr-Coulomb strain-softening and Mohr-Coulomb plasticity constitutive models were adopted for coal seam/poor strata and competent strata respectively. The extent of yielding of coal pillar was decided by the observed contour of the stresses and tensile/shears failure in the model. Results obtained on numerical models were validated and found to be in good tune with the actual monitored pillar behaviour.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers
ISBN
978-0-367-42284-4
ISSN
2639-7749
e-ISSN
2639-7757
Number of pages
9
Pages from-to
2812-2820
Publisher name
CRC Press/Balkema
Place of publication
Leiden
Event location
Foz do Iguassu
Event date
Sep 13, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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