CFD Modeling of Methane Distribution at a Continuous Miner Face with Various Curtain Setback Distances

Details

• Personal Author:
  Pritchard C ; Zheng Y ; Zhou L
• Description:
  Knowledge of the airflow patterns and methane distributions at a continuous miner face under different ventilation conditions can minimize the risks of explosion and injury to miners by accurately forecasting potentially hazardous face methane levels. This study focused on validating a series of computational fluid dynamics (CFD) models using full-scale ventilation gallery data that assessed how curtain setback distance impacted airflow patterns and methane distributions at an empty mining face (no continuous miner present). Three CFD models of face ventilation with 4.6, 7.6 and 10.7. m (15, 25, and 35. ft) blowing curtain setback distances were constructed and validated with experimental data collected in a full-scale ventilation test facility. Good agreement was obtained between the CFD simulation results and this data. Detailed airflow and methane distribution information are provided. Elevated methane zones at the working faces were identified with the three curtain setback distances. Visualization of the setback distance impact on the face methane distribution was performed by utilizing the post-processing capability of the CFD software. [Description provided by NIOSH]
• Subjects:
  Air Movements Explosions Mining Occupational Health Risk Assessment Risk Factors Safety Ventilation
• Keywords:
  Air-flow Airflow Pattern Author Keywords: Mine Ventilation Computational Fluid Dynamics Continuous Mining Face Explosion Explosive-gases Exposure-levels Hazards Injuries Methane Distribution Miners Models Risk-factors Underground-miners Underground-mining

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• Series:
  Mining Publications
• ISSN:
  2095-2686
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; OSHA Region 3 ; Pennsylvania ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  25
• Issue:
  4
• NIOSHTIC Number:
  nn:20046428
• Citation:
  Int J Min Sci Technol 2015 Jul; 25(4):635-640
• Contact Point Address:
  Lihong Zhou, Office of Mine Safety and Health Research, National Institute for Occupational Safety and Health, Pittsburgh, PA 15236
• Email:
  itn2@cdc.gov
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  2015
• Peer Reviewed:
  True
• Source Full Name:
  International Journal of Mining Science and Technology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ed14c2dd7b2c81207b1011f6bdc5282aa1a46300c7e6c8fad93c7cbd04f7bb43f4d1886e22e45b870796c1c28950d19d0071d01eccc29d3eef11bdebdf6c0743
• Download URL:
  https://stacks.cdc.gov/view/cdc/228137/cdc_228137_DS1.pdf
• File Type:
  [PDF - 1.55 MB ]