Determination of c and phi of rocks from indirect tensile strength and uniaxial compression tests

被引：29

作者：

Sivakugan, N. ^{[1
]}

Das, B. M. ^{[2
]}

Lovisa, J. ^{[1
]}

Patra, C. R. ^{[3
]}

机构：

[1] James Cook Univ, Sch Engn & Phys Sci, Townsville, Qld 4811, Australia

[2] Calif State Univ Sacramento, Sacramento, CA 95819 USA

[3] Natl Inst Technol, Rourkela, India

来源：

INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING | 2014年 / 8卷 / 01期

关键词：

Indirect tensile strength; Mohr-Coulomb; Shear strength parameters; Uniaxial compression; Correlations; Rock strength;

D O I：

10.1179/1938636213Z.00000000053

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Cohesion (c) and friction (phi) angle are the two key parameters required in numerical simulations and designs of underground openings, excavations, and foundations in rocks. The paper discusses a simple method, based on a theoretical framework, to determine the two parameters from uniaxial compression test and indirect tensile strength test. Laboratory tests were carried out on 35 rock specimens and the values of c and phi were computed. The predicted values of c appear to be more realistic than those of phi, and the scatter is attributed to the anisotropy and heterogeneity generally observed in the rock cores. The computed value of c is 1.82 times the indirect tensile strength (sigma(t)).

引用

页码：59 / 65

页数：7

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