Loading characteristics of mechanical rib bolts determined through testing and numerical modeling
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
i

Superseded

This Document Has Been Replaced By:

i

Retired

This Document Has Been Retired

i

Up-to-date Information

This is the latest update:

Loading characteristics of mechanical rib bolts determined through testing and numerical modeling
  • Published Date:

    2020

  • Source:
    Int J Min Sci Technol. 30(1):17-24
  • Language:
    English
Filetype[PDF-1.46 MB]


Details:
  • Alternative Title:
    Int J Min Sci Technol
  • Description:
    Underground coal mines use mechanical bolts in addition to other types of bolts to control the rib deformation and to stabilize the yielded coal ribs. Limited research has been conducted to understand the performance of the mechanical bolts in coal ribs. Researchers from the National Institute for Occupational Safety and Health (NIOSH) conducted this work to understand the loading characteristics of mechanical bolts (stiffness and capacity) installed in coal ribs at five underground coal mines. Standard pull-out tests were performed in this study to define the loading characteristics of mechanical rib bolts. Different installation torques were applied to the tested bolts based on the strength of the coal seam. A typical tri-linear load-deformation response for mechanical bolts was obtained from these tests. It was found that the anchorage capacity depended mainly on the coal strength. Guidelines for modeling mechanical bolts have been developed using the tri-linear load-deformation response. The outcome of this research provides essential data for rib support design.
  • Pubmed ID:
    32509376
  • Pubmed Central ID:
    PMC7274524
  • Document Type:
  • Collection(s):
  • Main Document Checksum:
  • File Type:
No Related Documents.

You May Also Like: