Abstract
The connected physical-mechanical model of gas-saturated coal seam with explicit taking into the account the processes of filtration and diffusion of the gas mixture in the pores of the solid skeleton has been proposed. The developed model as been verified on the basis of experimental data on desorption of CO2 from the sample of brown coal (lignite). An anomalous increase in strength and deformation capacity of gas-saturated coal sample during uniaxial loading in a certain range of pressure of gas in pores has been revealed. It has been shown that in this pressure range the destruction of the samples occurs with the formation of a large number of small fragments that can serve as a model of gas-dust emission into mine area.
| Original language | English |
|---|---|
| Title of host publication | 19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 |
| Publisher | European Conference on Fracture, ECF |
| Publication status | Published - 2012 |
| Event | 19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 - Kazan, Russian Federation Duration: 26 Aug 2012 → 31 Aug 2012 |
Other
| Other | 19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 |
|---|---|
| Country | Russian Federation |
| City | Kazan |
| Period | 26.8.12 → 31.8.12 |
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Keywords
- Coal beds
- Fracture
- Solid-gas composition
- Strength
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
Cite this
Numerical study of influence of adsorbed gas filtration and diffusion on dynamic phenomena in a coal seam. / Dimaki, A. V.; Dmitriev, A. I.; Zavsek, S.; Psakhie, S. G.
19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012. European Conference on Fracture, ECF, 2012.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Numerical study of influence of adsorbed gas filtration and diffusion on dynamic phenomena in a coal seam
AU - Dimaki, A. V.
AU - Dmitriev, A. I.
AU - Zavsek, S.
AU - Psakhie, S. G.
PY - 2012
Y1 - 2012
N2 - The connected physical-mechanical model of gas-saturated coal seam with explicit taking into the account the processes of filtration and diffusion of the gas mixture in the pores of the solid skeleton has been proposed. The developed model as been verified on the basis of experimental data on desorption of CO2 from the sample of brown coal (lignite). An anomalous increase in strength and deformation capacity of gas-saturated coal sample during uniaxial loading in a certain range of pressure of gas in pores has been revealed. It has been shown that in this pressure range the destruction of the samples occurs with the formation of a large number of small fragments that can serve as a model of gas-dust emission into mine area.
AB - The connected physical-mechanical model of gas-saturated coal seam with explicit taking into the account the processes of filtration and diffusion of the gas mixture in the pores of the solid skeleton has been proposed. The developed model as been verified on the basis of experimental data on desorption of CO2 from the sample of brown coal (lignite). An anomalous increase in strength and deformation capacity of gas-saturated coal sample during uniaxial loading in a certain range of pressure of gas in pores has been revealed. It has been shown that in this pressure range the destruction of the samples occurs with the formation of a large number of small fragments that can serve as a model of gas-dust emission into mine area.
KW - Coal beds
KW - Fracture
KW - Solid-gas composition
KW - Strength
UR - http://www.scopus.com/inward/record.url?scp=84905454769&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84905454769&partnerID=8YFLogxK
M3 - Conference contribution
BT - 19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
PB - European Conference on Fracture, ECF
ER -