Evaluation of Rock Mechanical Parameters - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 602

Table 18.19 Clay slate, Selingue project (Mali)
Rock mass

Elastic constants Strength of intact rock Strength of discontinuities Permeability References

E 1 = 4000 MPa
E 2 = 1000 MPa
G 2 = 480 MPa
ν 1 = 0.25
ν 2 = 0.06

φ IR = 28°
c IR = 7.5 MPa
σ tIR = 2 MPa

φ Sch = 30°
c Sch = 0
φ D1 = 30°
c D1 = 1 MPa
φ D2 = 35°
c D2 = 0

— —

Fillings: Fillings:

E f = 20 MPa φ f = 25°

c f = 0
σ f = 0

Table 18.20 Keuper, marl, predominantly siltstone (Untere Bunte Mergel), Stuttgart (Germany)
Rock mass

Elastic constants Strength of intact rock Strength of discontinuities Permeability References

E = 1000 MPa
ν

σ cIR = 3 - 15 MPa

= 35°
c = 0.3 - 1.5 MPa

k = 10 -10 - 10 -8 m/s WBI (2004)

φ •

= 0.25