Modelling rock strength in three dimensions

Moon Kyum Kim, P. V. Lade

Research output: Contribution to journalArticle

115 Citations (Scopus)

Abstract

A general, three-dimensional failure criterion for rock is proposed. This criterion is formulated in terms of the first and third stress invariants of the stress tensor, and it involves only three independent material parameters. Although these parameters interact with one another, each parameter corresponds to one of the three failure characteristics of rock behaviour. These material parameters may be determined from simple tests such as uniaxial compression and triaxial compression tests. For the purpose of including reasonable values of tensile strengths in the failure criterion, it may be advantageous to include the uniaxial tensile strength in the parameter determination. A simple expression for evaluation of the uniaxial tensile strength on the basis of the uniaxial compressive strength is given. Thirty-six sets of good quality data for different types of rock have been included in this study, and comparisons between the proposed failure criterion and the experimental data are made in triaxial, biaxial and octahedral planes. The ability of this criterion to capture the characteristics of failure in rock appears to be quite good with accuracies within the range of the natural scatter of the test data.

Original languageEnglish
Pages (from-to)21-33
Number of pages13
JournalInternational Journal of Rock Mechanics and Mining Sciences and
Volume21
Issue number1
DOIs
Publication statusPublished - 1984 Jan 1

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Rocks
Tensile strength
tensile strength
rock
modeling
compression
Compressive strength
Tensors
compressive strength
data quality
parameter
test
material

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Engineering(all)

Cite this

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Modelling rock strength in three dimensions. / Kim, Moon Kyum; Lade, P. V.

In: International Journal of Rock Mechanics and Mining Sciences and, Vol. 21, No. 1, 01.01.1984, p. 21-33.

Research output: Contribution to journalArticle

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