New Vipulanandan Failure Model and Property Correlations for Sandstone, Shale and Limestone Rocks

There is increasing activities in various types of rocks to not only produce oil and gas but also to construct transportation tunnels, support bridges, buildings, and storage facilities in sandstone, shale, and limestone. In this study, over 750 data were used to characterize the sandstone, shale, and limestone rocks behavior. The compressive strength and tensile strength of the rocks investigated varied up to 200 and 11 MPa respectively. The rocks were characterized based on the density, tensile strength to compression strength correlations. The density of sandstone, shale and limestone were in the range of 1.8–2.78 gm/cm³, 1.7–2.60 gm/cm³, and 1.7–3.0 gm/cm³ respectively. Vipulanandan correlation model was effective in relating the tensile strength to the compressive strength of the rocks. There was no direct correlation between the compressive strength and density or tensile strength and density of the rocks. A new Vipulanandan failure model was developed to not only better quantify the tensile strength but also to predict the maximum shear strength tolerance of the rocks. The prediction of the new failure model for all three rock types were compared to the Mohr-Coulomb failure model. Based on the coefficient of determination and the root mean square error values, the new Vipulanandan failure model predicted the results better than the Mohr-Coulomb model.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Monograph Title: IFCEE 2018: Advances in Geomaterial Modeling and Site Characterization

Subject/Index Terms

Filing Info

  • Accession Number: 01683142
  • Record Type: Publication
  • ISBN: 9780784481585
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:57PM