EFFECT OF LONGWALL FACE ADVANCE RATE ON SPONTANEOUS HEATING PROCESS IN THE GOB AREA - CFD MODELLING

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F11%3AA12011T4" target="_blank" >RIV/61988987:17310/11:A12011T4 - isvavai.cz</a>
Alternative codes found
RIV/68145535:_____/11:00368933
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
EFFECT OF LONGWALL FACE ADVANCE RATE ON SPONTANEOUS HEATING PROCESS IN THE GOB AREA - CFD MODELLING
Original language description
A three-dimensional, single-phase model with a continuously advancing longwall face has been developed. Numerical simulations confirmed the existence of a ?favourable? zone for the onset and development of the spontaneous heating process in the gob area.The location and the maximal temperature reached in the ?favourable? zone were found to be significantly affected by the advancing rate of the coalface. When the rate drops to a certain ?critical? value, spontaneous heating turns to flammable combustionof the coal. The value of the ?critical? advancing rate was confirmed to increase if the grain size of the coal left in the gob decreases. Numerical examinations of CO concentrations then proved that small incidents of spontaneous heating could occur inthe gob area that need not be detected in the airflow of the longwall tail gate.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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