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Mining Publication: Numerical Study on Spontaneous Combustion of Coal in U.S. Longwall Gob Areas
Keywords: Coal Longwall mining National Institute for Occupational Safety and Health Spontaneous combustion
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: November 2009
Authors: L Yuan, AC Smith
Conference Paper - November 2009
Download PDF Document (0.15 MB)
NIOSHTIC2 Number: 20036226
Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009. Panigrahi DC, ed., New Delhi, India: Oxford & IBH Publishing Co. Pvt. Ltd., 2009; :263-271
In order to reduce fire hazards caused by spontaneous combustion in longwall gob areas, a computational fluid dynamics (CFD) study is being conducted by National Institute for Occupational Safety and Health (NIOSH) to simulate the spontaneous heating of coal in longwall gob areas. A CFD model was first developed to model the spontaneous heating process in a two longwall panel district using a bleeder ventilation system with a stationary longwall face. The spontaneous heating is modeled as the low-temperature oxidation of coal in the gob using kinetic data obtained from previous laboratory-scale spontaneous combustion studies. Heat generated from coal oxidation is dissipated by convection and conduction, while oxygen and oxidation products are transported by convection and diffusion. CFD simulations were then conducted to model the spontaneous heating in longwall gob area with a bleederless ventilation system. A single longwall panel with a bleederless ventilation system was simulated. The effect of gob permeability on the spontaneous heating was also investigated.
Image of publication Numerical Study on Spontaneous Combustion of Coal in U.S. Longwall Gob AreasConference Paper - November 2009
Download PDF Document (0.15 MB)
NIOSHTIC2 Number: 20036226
Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009. Panigrahi DC, ed., New Delhi, India: Oxford & IBH Publishing Co. Pvt. Ltd., 2009; :263-271
See Also
Analysis and Design Considerations for Superimposed Longwall Gate Roads
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Development of Stress Measurements and Instrument Placement Techniques for Longwall Coal
Modeling and Prediction of Ventilation Methane Emissions of U.S. Longwall Mines Using Supervised Artificial Neural Networks
Numerical Study on Effects of Coal Properties on Spontaneous Heating in Longwall Gob Areas
Overview of Coal Mine Ground Control Issues in the Illinois Basin
Reservoir Engineering Considerations for Coal Seam Degasification and Methane Control in Underground Mines
SPONCOM - A Computer Program for the Prediction of the Spontaneous Combustion Potential of an Underground Coal Mine
SponCom - Spontaneous Combustion Assessment Software - 2.0
Technology News 545 - NIOSH Updates Spontaneous Combustion Assessment Software
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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