Evaluation of Rock Mechanical Parameters - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 594

Table 18.7 Alternating sequence of sandstones and siltstones (Waichecheng Series) near Taichung (Republic of China)
Rock mass

Elastic constants Strength of intact rock Strength of discontinuities Permeability References

E 1 = 8000 MPa
E 2 = 2000 MPa
G 2 = 900 MPa
ν 1 = 0.2
ν 2 = 0.08

σ cIR = 100 - 150 MPa — — • Wittke et al. (1979)

• Wittke (1990)