Expanding Application of the Voussoir Beam Analog to Horizontally Bedded and Passively Bolted Flat-Roof Excavations Using the Discrete Element Method

Details

• Personal Author:
  Abousleiman R ; Sinha S ; Walton G
• Description:
  The voussoir beam analog is a well-established analytical method that has been successfully applied to the design of flat-roof excavations in discontinuous rockmasses. However, application of voussoir beam theory is limited to very specific conditions. Previous authors have attempted to account for more realistic loading and geometric conditions, but have not presented systematic or verified methods to account for variations in inelastic material behavior or supported roof geometry. This study presents multiple original numerical models that methodically assess the effects of increasing material and geometric complexity on voussoir beam mechanical behavior and develops adjustments to the Diederichs & Kaiser (1999) analytical solution to account for variations in post-peak material behavior and the interactions between multiple passively bolted layers. A step-by-step guide is presented for implementing these adjustments. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Keywords:
  Analytical Methods Author Keywords: Numerical Modeling Discrete Element Method Geotechnical Engineering Mining Engineering Passive Rock Bolts Rock Mechanics Voussoir Beam
• ISSN:
  1365-1609
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  148
• NIOSHTIC Number:
  nn:20068001
• Citation:
  Int J Rock Mech Min Sci 2021 Dec; 148:104919
• Contact Point Address:
  Rami Abousleiman, Colorado School of Mines, 1500 Illinois St Golden, CO, 80401, USA
• Email:
  rabousle@gmail.com
• Federal Fiscal Year:
  2022
• Performing Organization:
  Colorado School of Mines, Golden
• Peer Reviewed:
  True
• Start Date:
  20160915
• Source Full Name:
  International Journal of Rock Mechanics and Mining Sciences
• End Date:
  20210914
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d9a131b90cd82a49afe1138fbbfd6ad140061286d34c94e096bd4e6aeba7ce7fb6e5ece8fb4255c5a16c6d706ce1a76e10e22e5adb1627e8856da6a4ab4f4b56
• Download URL:
  https://stacks.cdc.gov/view/cdc/230232/cdc_230232_DS1.pdf
• File Type:
  [PDF - 8.93 MB ]