Article citationsMore>>

Hammah, R.E., Curran, J.H., Yacoub, T.E. and Corkum, B. (2004) Stability Analysis of Rock Slopes Using the Finite Element Method. In: Schubert, W., Ed., Proceedings ISRM Regional Symposium EUROCK 2004 and 53rd Geomechanics Colloquy: Rock Engineering—Theory and Practice, International Society for Rock Mechanics, Lisbon, 783-788.

has been cited by the following article:

• TITLE: Calibration of Four Nonlinear Failure Envelopes from Triaxial Test Data and Influence of Nonlinearity on Geotechnical Computations

  AUTHORS: Amaechi J. Anyaegbunam, Fidelis O. Okafor

  KEYWORDS: Calibration of Nonlinear Failure Envelope, Triaxial Test Data, Modified Maksimovic Envelope, Power-Type Envelope, Polynomial-Type Envelope, Hoek-Brown Envelope, Standard Error of Estimate

  JOURNAL NAME: Geomaterials, Vol.11 No.2, April 8, 2021

  ABSTRACT: It is now recognized that many geomaterials have nonlinear failure envelopes. This non-linearity is most marked at lower stress levels, the failure envelope being of quasi-parabolic shape. It is not easy to calibrate these nonlinear failure envelopes from triaxial test data. Currently only the power-type failure envelope has been studied with an established formal procedure for its determination from triaxial test data. In this paper, a simplified procedure is evolved for the development of four different types of nonlinear envelopes. These are of invaluable assistance in the evaluation of true factors of safety in problems of slope stability and correct computation of lateral earth pressure and bearing capacity. The use of the Mohr-Coulomb failure envelopes leads to an overestimation of the factors of safety and other geotechnical quantities.