Practical values of friction factors

Prosser, B S; Wallace, K G

Title: Practical values of friction factors

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Abstract

Over the past fifteen years, engineers from Mine Ventilation Services, Inc. (MVS) have measured numerous friction factors at many different types of mining operations. The results of these measurements indicate that standardized friction factors referenced in most ventilation textbooks are greater than those measured in the field for similar airway support systems. Many referenced friction factors are still based on G.E. McElroy's classic paper Engineering Factors in the Ventilation of Metal Mines published in 1935. Most mechanized mines now incorporate airways that are larger, have more advanced support systems, and more uniform openings. This paper describes the measurement techniques and results from friction factor measurements taken during ventilation surveys at various mines with differing support systems. A comparison between textbook and measured values is also presented.

Authors:: Prosser, B S; Wallace, K G

Publication Date:: Thu Jul 01 00:00:00 EDT 1999

Research Org.:: Mine Ventilation Services, Inc., Fresno, CA (US)

OSTI Identifier:: 20021017

Resource Type:: Conference

Resource Relation:: Conference: 8th US Mine Ventilation Symposium, Rolla, MO (US), 06/11/1999--06/17/1999; Other Information: PBD: 1999; Related Information: In: Proceedings of the 8th US mine ventilation symposium, by Tien, J.C. [ed.], 740 pages.

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; UNDERGROUND MINING; VENTILATION SYSTEMS; FRICTION FACTOR; MINE ROADWAYS; SUPPORTS; MEASURING METHODS; AIR FLOW; DRAG

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                    Prosser, B S, and Wallace, K G. Practical values of friction factors.  United States: N. p., 1999. 
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                    Prosser, B S, & Wallace, K G. Practical values of friction factors.  United States.

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                    Prosser, B S, and Wallace, K G. 1999.  
        "Practical values of friction factors".  United States.

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@article{osti_20021017,

  title        = {Practical values of friction factors},

  author       = {Prosser, B S and Wallace, K G},

  abstractNote = {Over the past fifteen years, engineers from Mine Ventilation Services, Inc. (MVS) have measured numerous friction factors at many different types of mining operations. The results of these measurements indicate that standardized friction factors referenced in most ventilation textbooks are greater than those measured in the field for similar airway support systems. Many referenced friction factors are still based on G.E. McElroy's classic paper Engineering Factors in the Ventilation of Metal Mines published in 1935. Most mechanized mines now incorporate airways that are larger, have more advanced support systems, and more uniform openings. This paper describes the measurement techniques and results from friction factor measurements taken during ventilation surveys at various mines with differing support systems. A comparison between textbook and measured values is also presented.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/20021017},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jul 01 00:00:00 EDT 1999},

  month        = {Thu Jul 01 00:00:00 EDT 1999}

}

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