Application of Parametric Column Analysis to Evaluate Eccentric Loading Conditions on Prop Support Performance

Details

• Journal Article:
  2007 SME Annual Meeting and Exhibit, February 25-28, Denver Colorado, Preprint 07-105
• Personal Author:
  Gearhart, David F.
• Description:
  Full-scale tests are conducted on mine roof supports using protocols developed by the National Institute for Occupational Safety and Health (NIOSH) using the unique capabilities of the Mine Roof Simulator (MRS). These protocols simulate the loading conditions that the support will be exposed to in an underground mine to determine the performance capabilities and limitations of the support. Some tests are conducted with rigid boundary conditions, creating uniform contact and near ideal axial loading conditions. These tests are used to determine the ultimate performance potential of a support, including the strength, stiffness, and stability. For prop supports where stability is a critical design issue, tests are implemented to induce buckling by a modified end condition, eccentric contact, or biaxial loading. It is important to determine the capacity of the support design when the support is subjected to unpredictable loading conditions. This paper examines the effect of end conditions and load profiles on prop support performance and applies a new analysis methodology based on eccentric loading to determine a factor of safety for load capacity. Recommendations for installation practices that minimize eccentricity and therefore preserve capacity are also provided. Description provided by NIOSH
• Subjects:
  • Coal
  • Coal Mining
  • Geology
  • Mining
  • Occupational Health
  • Safety
  • Software
• Keywords:
  • Mining-industry; Underground-mining; Safety-research; Geology; Ground-control
• Source:
  2007 SME Annual Meeting and Exhibit, February 25-28, Denver Colorado, Preprint 07-105. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2007 Feb; :1-8
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  8 pdf pages
• NIOSHTIC Number:
  nn:20031649
• Contact Point Address:
  NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
• Federal Fiscal Year:
  2007
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Download URL:
  https://stacks.cdc.gov/view/cdc/8552/cdc_8552_DS1.pdf
• File Type:
  [PDF - 303.81 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ba704350af83cfb2cd310bf02de8323ef00cc15bd2a2032ea11de8cf0054072b2802fb902ffbafac0f980fb8e27e3cfd057dc97966a80faf166742107f3e6c51