Mining Publication: Peak Methane Concentrations During Coal Mining: An Analysis
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Original creation date: January 1974
Methane concentration peaks were measured by the Bureau of Mines at coal mine working faces during entry development. The statistical distribution of peaks was found to be normal or log normal depending on how well the methane was being mixed into the ventilation airstream. A normal distribution indicated good mixing, whereas a log-normal distribution indicated that mixing was poor. In addition, the "highest" peaks over selected intervals were found to fit a type I extreme-value distribution, a result similar to that obtained while mining longwall faces.
Authors: FN Kissell, JL Banfield, RW Dalzell, MG Zabetakis
Report of Investigations - January 1974
NIOSHTIC2 Number: 10000617
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7885, 1974 Jan; :1-17
See Also
- Composition Change Model for Sealed Atmosphere in Coal Mines
- Evaluating Performance Characteristics of Machine-Mounted Methane Monitors by Measuring Response Time
- Historical Development of Technologies for Controlling Methane in Underground Coal Mines
- Methane Control for Underground Coal Mines
- Pillar Mechanics of Coal Mine Bursts: A Control Strategy
- Possible Impact of New Safety Technology Developments on the Future of the United States Mining Industry
- Research on the Transmission of Electromagnetic Signals Between Mine Workings and the Surface
- Results of Direct-Method Determination of the Gas Content of U.S. Coalbeds
- Rotary Drilling Techniques Used in the Beckley Coalbed
- Use of a Test Box to Measure Response Times for Machine-Mounted Monitors
- Content source: National Institute for Occupational Safety and Health, Mining Program