Determination of velocity correction factors for real-time air velocity monitoring in underground mines

Details

• Alternative Title:
  Int J Coal Sci Technol
• Personal Author:
  Zhou, Lihong ; Yuan, Liming ; Thomas, Rick ; Iannacchione, Anthony
• Description:
  When there are installations of air velocity sensors in the mining industry for real-time airflow monitoring, a problem exists with how the monitored air velocity at a fixed location corresponds to the average air velocity, which is used to determine the volume flow rate of air in an entry with the cross-sectional area. Correction factors have been practically employed to convert a measured centerline air velocity to the average air velocity. However, studies on the recommended correction factors of the sensor-measured air velocity to the average air velocity at cross sections are still lacking. A comprehensive airflow measurement was made at the Safety Research Coal Mine, Bruceton, PA, using three measuring methods including single-point reading, moving traverse, and fixed-point traverse. The air velocity distribution at each measuring station was analyzed using an air velocity contour map generated with Surfer®. The correction factors at each measuring station for both the centerline and the sensor location were calculated and are discussed.
• Subjects:
  Airflow Measurement Article Correction Factor Underground Mine
• Source:
  Int J Coal Sci Technol. 4(4):322-332.
• Pubmed ID:
  29201495
• Pubmed Central ID:
  PMC5709814
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHS/United States
• Volume:
  4
• Issue:
  4
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:08b86d295ec60b35f55a3603d7fa5153c855608216c6eed769d4ba36a7fbe806
• Download URL:
  https://stacks.cdc.gov/view/cdc/50426/cdc_50426_DS1.pdf
• File Type:
  [PDF - 985.58 KB ]