Numerical Study on Spontaneous Combustion of Coal in U.S. Longwall Gob Areas

Details

• Personal Author:
  Smith, Alex C. ; Yuan L
• Description:
  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. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Fires Hot Temperature Mining Occupational Health Safety Ventilation Workplace
• Keywords:
  Author Keywords: Spontaneous Combustion Coal-mining Combustibility Combustion-products Control-technology Engineering-controls Fire-hazards Fire-prevention Heat Heat-production Longwall-mining Longwall Gob Mine-seals Mining-equipment Mining-industry Modeling Underground-mining Ventilation-systems Work-environment Workplace-studies

  More +
• Series:
  Mining Publications
• ISBN:
  9788120417496
• Publisher:
  Oxford & IBH Publishing Co.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  263-271
• Volume:
  1
• NIOSHTIC Number:
  nn:20036226
• Citation:
  Mine Ventilation: Proceedings of the Ninth International Mine Ventilation Congress, November 10-13, 2009, New Delhi, India. Panigrahi DC ed. New Delhi, India: Oxford & IBH Publishing Co., 2009 Nov; 1:263-271
• Email:
  lcy6@cdc.gov
• Editor(s):
  Panigrahi DC
• Federal Fiscal Year:
  2010
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:204f0626944e17ba4edd2bda6a145eb4c27a0185c02bd2d9f4d36865170618c013617987da6f3f7882e93553070a31fcc922234af529590cbd6c787f3964aa76
• Download URL:
  https://stacks.cdc.gov/view/cdc/227154/cdc_227154_DS1.pdf
• File Type:
  [PDF - 3.16 MB ]