Field-Scale Void Detection in Coal Piles Using Resistivity Imaging

Details

• Personal Author:
  Rodriguez, Rene ; Rodriguez, Henry ; Lhamond, Michael ; Johnson, Jeffrey C. ; Iverson, Steve
• Description:
  To reduce fatalities resulting from personnel falling into voids formed above feeders in coal piles, the National Institute for Occupational Safety and Health at the Spokane Research Laboratory established a project to monitor coal surge piles to detect the formation of voids. A resistivity imaging method has been developed by GECOH Exploration, of Lexington, KY, in which a geophysical technique known as vertical electrical sounding (VES) is used to scan for these voids. VES operates by measuring the electrical field produced by a current in the ground at the bottom of the coal pile. This paper summarizes the results obtained from a field-scale test and shows that mapping voids within a coal pile is possible.
• Subjects:
  NIOSH
• Document Type:
  Text
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• NIOSHTIC Number:
  nn:20030439
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:78de579a8fd2da1abec60cfbe7ba0d36b8a8e0190e9c4c4e65aac9fb0e11ed138d18caae9d87297758006d8f0327a01acad03c7fb44bb8d787b045c2136a2c4a
• Download URL:
  https://stacks.cdc.gov/view/cdc/8796/cdc_8796_DS1.pdf
• File Type:
  [PDF - 822.31 KB ]