Stress-Strain Behavior of Jointed Rock - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 40

(3.2)

Figure 3.1 Defi nition of the elastic
constants E and of an intact rock

with random grain structure

ν

Equation (3.2) can also be expressed in a more compact matrix form:

(3.3)

In (3.3)

and

are the stress and strain vectors in which σ x , σ y , σ z , τ xy , τ yz , τ zx and

are the components of the symmetric stress and strain ten-

sors, respectively, and