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Mining Publication: The Effect of Ventilation on Spontaneous Heating of Coal
Keywords: Coal mining Spontaneous combustion Underground mining Ventilation
Original creation date: January 2011
Authors: L Yuan, AC Smith
Peer Reviewed Journal Article - January 2011
Download PDF Document (0.90 MB)
J Loss Prev Process Ind 2012 Jan; 25(1):131-137
Ventilation plays an important role in the spontaneous heating of coal in an underground coal mine. If the ventilation rate is too high, heat is carried away by convection. If the ventilation rate is too low, the reaction rate becomes oxygen-limited. The effect of ventilation on the spontaneous heating of coal was investigated in an isothermal oven in this study. Experiments were conducted on three U.S. coal samples with ventilation rates ranging from 100 to 500 cm3/min. Experiments under ventilation were conducted to determine the critical ambient temperature, which is the minimum oven temperature required for a coal sample to achieve thermal runaway. Spontaneous heating tests were then conducted at various ventilation rates at the critical ambient temperature and the results were compared with spontaneous heating tests without ventilation. It was found that there is an optimum ventilation flow to produce the maximum rate of temperature rise at the critical ambient temperature. When the coal sample particle size was increased, a higher critical ambient temperature was required. The results in this study have application in the prevention of spontaneous combustion in underground coal mines
Image of publication The Effect of Ventilation on Spontaneous Heating of CoalPeer Reviewed Journal Article - January 2011
Download PDF Document (0.90 MB)
J Loss Prev Process Ind 2012 Jan; 25(1):131-137
See Also
CFD Modeling of Spontaneous Heating in a Large-Scale Coal Chamber
Effects of Ventilation and Gob Characteristics on Spontaneous Heating in Longwall Gob Areas
Methane Control for Underground Coal Mines
Refuge Alternatives in Underground Coal Mines
Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation System
SPONCOM - A Computer Program for the Prediction of the Spontaneous Combustion Potential of an Underground Coal Mine
Spontaneous Combustion
Technology News 441 - SPONCOM - An Expert System to Predict Spontaneous Combustion Potential of a Coal Mining Operation
Technology News 545 - NIOSH Updates Spontaneous Combustion Assessment Software
Wireless Mesh Mine Communication System
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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