Effects of Different Shapes of Drill Shroud on Dust Control for Surface Mine Drilling Operation

Details

• Personal Author:
  Potts, J. Drew ; Reed, William R. ; Zheng Y
• Description:
  Dust control using drill shroud air-blocking shelves was confirmed effective. However, when the drilling machine moves to different locations, deposits on these shelves can produce a large dust cloud. To minimize this dust exposure hazard, this study modified the drill shroud air-blocking shelves by utilizing the concept of angle of friction to eliminate the deposits and, at the same time, still be able to confine the dust inside the drill shroud. Two types of inner shape were evaluated using CFD models: U-shaped and V-shaped drill shrouds. In addition, a drill shroud with 45 degrees blocking shelves was also built to examine its dust control capacity. Based on the study, the angle of friction used to minimize the dust problems during mast lowering was shown to be effective in reducing the dust problems during drilling. However, care must be taken to use a properly designed shroud as the V-shaped drill shroud can potentially exacerbate the dust leakage. [Description provided by NIOSH]
• Subjects:
  Dust Mining Occupational Health Particulate Matter Safety Silicon Dioxide Ventilation
• Keywords:
  Drilling Dust Control Equipment Mining Industry Particulate Dust Respirable Dust Silica Dusts Surface Mining
• Series:
  Mining Publications
• ISBN:
  9781032036793
• Publisher:
  CRC Press
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  225-232
• NIOSHTIC Number:
  nn:20063594
• Citation:
  Mine Ventilation: Proceedings of the 18th North American Mine Ventilation Symposium (NAMVS 2021), June 12-17, 2021, Rapid City, South Dakota. Tukkaraja P ed. London: CRC Press, 2021 Jun; :225-232
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Editor(s):
  Tukkaraja P
• Federal Fiscal Year:
  2021
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Mine Ventilation: Proceedings of the 18th North American Mine Ventilation Symposium (NAMVS 2021), June 12-17, 2021, Rapid City, South Dakota
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:89fd222532592c58fbab7a0c8d32de2baff35a9fad8304eaaf640d400f310b47303ffd7abc6ea8308a50a9a9a4daf47ba873112f13d42603367ff134c5f60739
• Download URL:
  https://stacks.cdc.gov/view/cdc/215446/cdc_215446_DS1.pdf
• File Type:
  [PDF - 642.01 KB ]