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Mining Publication: Floor Dust Erosion During Early Stages of Coal Dust Explosion Development
Keywords: Ignitions Rock dusting
Original creation date: January 2020
Authors: M Harris, M Sapko
Peer Reviewed Journal Article - December 2019
Go to Web Page
NIOSHTIC2 Number: 20057399
Int J Min Sci Technol 2019 Dec; 29(6):825-830
An ignition of methane and air can generate enough air flow to raise mixtures of combustible coal and rock dust. The expanding high temperature combustion products ignite the suspended dust mixture and will continue to propagate following the available combustible fuel supply. If the concentration of the dispersed rock dust is sufficient, the flame will stop propagating. Large-scale explosion tests were conducted within the National Institute for Occupational Safety and Health (NIOSH) Lake Lynn Experimental Mine (LLEM) to measure the dynamic pressure history and the post-explosion dust scour depth. The aim of this effort is to provide quantitative data on depth of dust removal during the early stages of explosion development and its relationship to the depth of floor dust collected for assessing the incombustible content most likely to participate in the combustion process. This experimental work on dust removal on is not only important for coal mine safety but also for industrial dust explosions.
First page of Floor Dust Erosion During Early Stages of Coal Dust Explosion DevelopmentPeer Reviewed Journal Article - December 2019
Go to Web Page
NIOSHTIC2 Number: 20057399
Int J Min Sci Technol 2019 Dec; 29(6):825-830
See Also
Coal Dust Explosibility Meter Evaluation and Recommendations for Application
Coal Dust Particle Size Survey of US Mines
Determining Flame Travel Measurements from Experimental Coal Dust Explosions
Ignition of Methane-Air Mixtures by Laser Heated Small Particles
Methane-Air Mixtures Ignited by CW Laser-Heated Targets on Optical Fiber Tips: Comparison of Targets, Optical Fibers, and Ignition Delays
Mitigating Coal Dust Explosions in Modern Underground Coal Mines
NIOSH Hazard ID 4 - Ignition Hazard from Drilling into Sealed Frames of Agricultural Equipment
Rock Dusting Considerations in Underground Coal Mines
Technology News 473 - The Explosion Hazard From Hydrogen Gas Generation Inside Sealed Frames
Technology News 515 - Float Coal Dust Explosion Hazards
Page last reviewed: May 21, 2020
Page last updated: May 21, 2020
Content source: National Institute for Occupational Safety and Health, Mining Program
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