Evaluation of Rock Mechanical Parameters - Rock Mechanics Based on an Anisotropic Jointed Rock Model - page 591

Table 18.1 Albtal granite-like gneiss, Southern Black Forest (Germany)
Rock mass

Elastic constants Strength of intact rock Strength of discontinuities Permeability References

E = 55,000 - 85,000 MPa
ν

σ cIR = 70 MPa φ D1-D5 = 25 - 50°

c D1-D5 = 0 - 0.1 MPa

— • Wittke & Pfisterer (1972)

= 0.18 • Pfisterer et al. (1974)

• Wittke et al. (1974)

• Wittke (1990)

Table 18.2 Gabbro-norite, Diamer Basha Dam Project (Pakistan)
Rock mass

Elastic constants Strength of intact rock Strength of discontinuities Permeability References

E = 15,000 - 35,000 MPa
ν = 0.1 - 0.25

σ cIR = 25 - 150 MPa φ D1-D4 = 35°

c D1-D4 = 0.1 - 4 MPa
(depending on persistence)

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