Analysis of Global and Local Stress Changes in a Longwall Gateroad

Details

• Personal Author:
  Esterhuizen, Gabriel S. ; Gearhart D ; Klemetti, Ted M. ; Mohamed KM ; Su, Daniel W. H. ; Tulu IB ; Esterhuizen, Gabriel S. ; Gearhart D ; Klemetti, Ted M. ; Mohamed KM ; Su, Daniel W. H. ; Tulu IB
• Description:
  A numerical-model-based approach was recently developed for estimating the changes in both the horizontal and vertical loading conditions induced by an approaching longwall face. In this approach, a systematic procedure is used to estimate the model's inputs. Shearing along the bedding planes is modeled with ubiquitous joint elements and interface elements. Coal is modeled with a newly developed coal mass model. The response of the gob is calibrated with back analysis of subsidence data and the results of previously published laboratory tests on rock fragments. The model results were verified with the subsidence and stress data recently collected from a longwall mine in the eastern United States. [Description provided by NIOSH]
• Subjects:
  Laboratories Mining Occupational Health Safety
• Keywords:
  3D Analytical Instrumentation Analytical Models Author Keywords: Longwall Mining Environmental Stress Environmental Technology Flac3D Gateroad Design Geologic Models Gob Loading Ground Control Ground Monitoring Ground Stability Hollow Inclusion Cells Horizontal Angle Horizontal Stress In Situ Mining Laboratory Testing Load Monitoring Longwall Mining Mathematical Models Measurement-equipment Monitoring Systems Pillar Design Pillar Mechanics Retreat Mining Roof Falls Safety Research Strata Control Three Dimensional Underground Mines

  More +
• Series:
  Mining Publications   ; Mining Publications  
• ISSN:
  2095-2686
• Document Type:
  Text
• Genre:
  Journal Article ; Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division ; PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  127-135
• Volume:
  28
• Issue:
  1
• NIOSHTIC Number:
  nn:20050742
• Citation:
  Int J Min Sci Technol 2018 Jan; 28(1):127-135
• Contact Point Address:
  Ihsan B Tulu, Associate Service Fellow, Ground Control Branch, NIOSH, Pittsburgh Mining Research Division, Pittsburgh, PA, USA
• Federal Fiscal Year:
  2018
• NORA Priority Area:
  Mining ; Mining
• Peer Reviewed:
  True
• Source Full Name:
  International Journal of Mining Science and Technology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:46378f2d25d825b4a962691097a2f25746367c86025732169dc322e6a158db75fcbc161d05e34c6b1325b1688541d7cfdda0955a5cd05d08077f20422cc8a416
• Download URL:
  https://stacks.cdc.gov/view/cdc/227612/cdc_227612_DS1.pdf
• File Type:
  [PDF - 1.36 MB ]