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Mining Publication: CFD Modeling of Methane Distribution at a Continuous Miner Face With Various Curtain Setback Distances
Keywords: Blowing ventilation Faces Methane Numerical modeling Ventilation curtains
Original creation date: July 2015
Authors: L Zhou, C Pritchard, Y Zheng
Peer Reviewed Journal Article - July 2015
Download PDF Document (1.34 MB)
NIOSHTIC2 Number: 20046428
Int J Min Sci Technol 2015 Jul; 25(4):635-640
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.
Cover page for CFD modeling of methane distribution at a continuous miner face with various curtain setback distancesPeer Reviewed Journal Article - July 2015
Download PDF Document (1.34 MB)
NIOSHTIC2 Number: 20046428
Int J Min Sci Technol 2015 Jul; 25(4):635-640
See Also
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Effect of Water Sprays on Airflow Movement and Methane Dilution at the Working Face
Effects of Water Sprays Used With a Machine-Mounted Scrubber on Face Methane Concentrations
Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations
Methane Diffusion Parameters for Sized Coal Particles: A Measuring Apparatus and Some Preliminary Results
Predicting Methane Emissions from Longer Longwall Faces by Analysis of Emission Contributors
Prediction of Longwall Methane Emissions and the Associated Consequences of Increasing Longwall Face Lengths: A Case Study in the Pittsburgh Coalbed
Simulation of Methane Flows in Noncoal Mines
Stochastic Modeling of Gob Gas Venthole Production Performances in Active and Completed Longwall Panels of Coal Mines
Technology News 465 - Method for Predicting Methane Emissions on Extended Longwall Faces
Page last reviewed: October 5, 2015
Page last updated: October 5, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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