Mining Publication: Experimental and Modeling Investigation of the Effect of Ventilation on Smoke Rollback in a Mine Entry
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Original creation date: February 2005
Diesel fuel fire experiments were conducted in NIOSH's Pittsburgh Research Laboratory's (PRL) Safety Research Coal Mine (SRCM) to determine the critical air velocity for preventing smoke rollback. Such information is necessary for the preplanning and implementation of ventilation changes during mine fire fighting and rescue operations. The fire intensity varied from 50kW to 300kW depending upon the fuel tray area. Airflow in the 2 m high and 2.9 m wide coal mine entry was regulated during the course of each experiment; measured upwind from the fire as an average over the entry cross-section with an ultrasonic airflow sensor; and recorded dynamically with a mine monitoring system. The extent of smoke reversal was monitored with light obscuration monitors, ionization smoke sensors, and visual observations. Experimental results for the critical air velocity for smoke reversal as a function of fire intensity compared very well with model predictions based upon a computational fluid dynamics (CFD) fire dynamics simulator.
Authors: JC Edwards, RA Franks, GF Friel, L Yuan
Conference Paper - February 2005
NIOSHTIC2 Number: 20026231
2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, preprint 05-14. Littleton, CO, Society for Mining, Metallurgy, and Exploration, Inc., 2005 Feb; :1-6
See Also
- CFD Analysis of Mine Fire Smoke Spread and Reverse Flow Conditions
- CFD Modeling of Fire Spread Along Combustibles in a Mine Entry
- Evaluation of the Bagged Stone Dust Barrier Effectiveness in a Bord and Pillar Mine
- Evaluation of the Relative Importance of Coalbed Reservoir Parameters for Prediction of Methane Inflow Rates During Mining of Longwall Development Entries
- Experimental and Modeling Investigation of the Effect of Ventilation on Smoke Rollback in a Mine Entry
- Novel Stopping Designs for Large-Opening Metal/Nonmetal Mines
- Reservoir Modeling-Based Prediction and Optimization of Ventilation Requirements During Development Mining in Underground Coal Mines
- Smoke, Carbon Monoxide, and Hydrogen Chloride Production from the Pyrolysis of Conveyor Belting and Brattice Cloth
- Study of Mine Fires and Mine Ventilation: Part I, Computer Simulation of Ventilation Systems Under the Influence of Mine Fires
- Understanding Mine Fire Disasters by Determining the Characteristics of Deep-Seated Fires
- Page last reviewed: 9/21/2012
- Page last updated: 9/21/2012
- Content source: National Institute for Occupational Safety and Health, Mining Program