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Mining Publication: Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation System
Keywords: Coal mining Gobs Numerical modeling Spontaneous combustion Ventilation
Original creation date: August 2008
Authors: AC Smith, L Yuan
Peer Reviewed Journal Article - August 2008
Download PDF Document (0.44 MB)
NIOSHTIC2 Number: 20034235
Min Eng 2008 Aug; 60(8):61-66
Although only used in a few U.S. longwall mines, bleederless ventilation systems can be an effective spontaneous combustion control method in mines having a demonstrated history of spontaneous combustion. To provide insights for the optimization of bleederless ventilation systems for U.S. underground coal mines, a computational fluid dynamics (CFD) study was conducted to model the spontaneous heating in longwall gob areas using a bleederless ventilation system. A single longwall panel with a bleederless ventilation system was simulated, and typical longwall mine ventilation data were used in the simulations. The permeability and porosity profiles for the longwall gob were estimated using a geotechnical model and were used as inputs for the CFD modeling. The effects of gob permeability and resistance of the collapsed entries on the spontaneous heating were studied. The effectiveness of using nitrogen injection to prevent spontaneous heating in the gob was also examined.
Image of publication Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation SystemPeer Reviewed Journal Article - August 2008
Download PDF Document (0.44 MB)
NIOSHTIC2 Number: 20034235
Min Eng 2008 Aug; 60(8):61-66
See Also
CFD Modeling of Spontaneous Heating in a Large-Scale Coal Chamber
Computational Fluid Dynamics Modeling of Spontaneous Heating in Longwall Gob Areas
Development and Application of Reservoir Models and Artificial Neural Networks for Optimizing Ventilation Air Requirements in Development Mining of Coal Seams
Effect of Longwall Face Advance on Spontaneous Heating in Longwall Gob Areas
The Effect of Ventilation on Spontaneous Heating of Coal
Effects of Ventilation and Gob Characteristics on Spontaneous Heating in Longwall Gob Areas
Elastic and Shear Moduli of Coal Measure Rocks Derived from Basic Well Logs Using Fractal Statistics and Radial Basis Functions
Numerical Study on Effects of Coal Properties on Spontaneous Heating in Longwall Gob Areas
Spontaneous Combustion
Stochastic Modeling of Gob Gas Venthole Production Performances in Active and Completed Longwall Panels of Coal Mines
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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