A MODEL FOR THE TIME-DEPENDENT BEHAVIOR OF ROCK

被引：40

作者：

FAKHIM, AA

FAIRHURST, C

机构：

[1] Department of Civil and Mineral Engineering, University of Minnesota, MN 55455

来源：

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS | 1994年 / 31卷 / 02期

关键词：

16;

D O I：

10.1016/0148-9062(94)92801-0

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Time-dependent stability of rock structures is studied using a visco-elastoplastic constitutive model. The model consists of an elasto-plastic Mohr-Coulomb unit in series with a linear viscous unit. Both cohesion and friction are assumed to evolve with plastic and viscous strain in order to incorporate strain softening and time-dependent material degradation. To avoid mesh sensitivity in the numerical analysis, a non-local approach is introduced. The numerical results obtained for the long-term stability of a simulated biaxial test seem to be qualitatively consistent with experimental results reported in the literature.

引用

页码：117 / 126

页数：10

共 16 条

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