Correction to: A New Perspective on the Brittle-Ductile Transition of Rocks

Details

• Personal Author:
  Walton, G.
• Description:
  Brittleness is an important property of rocks in the context of engineering applications, as it often determines how severe the practical consequences of rock yield will be. Many authors have proposed various brittleness indices intended to allow for relative categorization of brittleness, but many are relatively simplified and/or only applicable for certain categories of rock. This study provides a new perspective on rock brittleness through study of the confining stress at the brittle-ductile transition. Based on previous findings regarding the brittle-ductile transition, an equation to predict this confining stress is derived, and three key material properties associated with material brittleness are identified. Considering these properties, existing assumptions regarding material brittleness as applied in the rock mechanics literature are identified and discussed. A preliminary analysis of data from the literature regarding the influences of fluid saturation and true triaxial loading conditions is presented. Correction: https://doi.org/10.1007/s00603-021-02669-8: After publication, the author became aware that a derivation similar to the one presented in Sect. 3.1 of this paper had previously been published. Specifically, it should be noted that when d=3.4 (i.e. "Mogi's Line") is substituted into Eq. (11), it simplifies to be equivalent to the equation for sigma*3 derived in Appendix A.2 of the doctoral thesis of Rahjoo (2019). Description provided by NIOSH
• Subjects:
  • Occupational Health
  • Safety
• Keywords:
  • Rock mechanics; Ground control; Geotechnical engineering; Geologic models; Mining engineering;
  • Author Keywords: Brittle-ductile transition; Brittleness; Intact rock; Mogi's line
• ISSN:
  0723-2632
• 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
• Pages in Document:
  1 pdf page
• Volume:
  54
• NIOSHTIC Number:
  nn:20066358
• Citation:
  Rock Mech Rock Eng 2021 Dec; 54(12):5993-6006
• Contact Point Address:
  G. Walton, Colorado School of Mines, Golden, CO, USA
• Email:
  gwalton@mines.edu
• Federal Fiscal Year:
  2022
• Performing Organization:
  Colorado School of Mines, Golden
• Peer Reviewed:
  True
• Start Date:
  20160915
• Source Full Name:
  Rock Mechanics and Rock Engineering
• End Date:
  20210914
• Download URL:
  https://stacks.cdc.gov/view/cdc/231517/cdc_231517_DS1.pdf
• File Type:
  [PDF - 242.77 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f1cf4db005b7ae6d64781b21433d0de5f52c7449973cc78759907cf27c46963a3a41d4de548d30de8770f2231749b42ae1b2287c58f7e11f85d8e0a188740165