Permeability Determination for Potential Interaction Between Shale Gas Wells and the Coal Mine Environment Due to Longwall-Induced Deformations Under Deep Cover

Details

• Personal Author:
  Addis JD ; Ajayi KM ; Dougherty H ; Gangrade V ; Harris, Marcia L. ; Schatzel, Steven J. ; Van Dyke M ; Watkins E ; Zhang P
• Description:
  This paper summarizes the changes in permeability for two boreholes located above an abutment pillar in a longwall coal mine to characterize potential interaction between shale gas wells and the coal mine operations under deep cover. To determine the safety of the mine environment in case of a potential well breach, fracture network characteristics are needed to conduct a comprehensive hazard assessment. Permeability was measured using a falling-head slug test and calculated in accordance with the Hvorslev model during the mine-by of a longwall panel on one side of the pillar. The two boreholes had screened lengths at different depths to evaluate stratigraphic zones of interest above the active mining seam. The permeability at each borehole increased from pre-mining to post-mining and was highest while the face was close to and during mine-by of the test site. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Ventilation
• Keywords:
  Boreholes Coal Mines Longwall Mining Pillar Mechanics Underground Mines
• Series:
  Mining Publications
• ISBN:
  9781032551463
• 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:
  499-506
• NIOSHTIC Number:
  nn:20069436
• Citation:
  Underground Ventilation: Proceedings of the 19th North American Mine Ventilation Symposium (NAMVS 2023), June 17-22, 2023, Rapid City, South Dakota. Tukkaraja P ed. London: CRC Press, 2023 Sep; :499-506
• Editor(s):
  Tukkaraja P
• Federal Fiscal Year:
  2023
• Peer Reviewed:
  False
• Source Full Name:
  Underground Ventilation: Proceedings of the 19th North American Mine Ventilation Symposium (NAMVS 2023), June 17-22, 2023, Rapid City, South Dakota
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e7e713d21b9da06fa852eecca00280b9ceb69ad7de5ea15624e35375140bdacb24b53505bffe24b795f4c0c20e4855b3617cdf4f03e8803d41c80481f3cf0a1b
• Download URL:
  https://stacks.cdc.gov/view/cdc/215652/cdc_215652_DS1.pdf
• File Type:
  [PDF - 1.29 MB ]