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Table 1 Summary of the elastic moduli reported for URG granites from EPS-1 and GPK-1.

From: Estimating in situ rock mass strength and elastic modulus of granite from the Soultz-sous-Forêts geothermal reservoir (France)

Type Average intact elastic modulus Method References
Static 49 ± 4 Triaxial compression (40 MPa confinement) Schäfer (1990)
Static 73 ± 6 Three-point bending tests (62 mm cores) Rummel et al. (1989)
Static 70 ± 6 Three-point bending tests (30 mm cores) Rummel et al. (1989)
Static 38 ± 8.5 Three-point bending tests Rummel (1992)
Static 51 ± 6.6 Uniaxial compression tests Valley and Evans (2006)
Dynamic 62 ± 5 (dry) Elastic wave velocities Schäfer (1990)
88 ± 4 (wet)
Dynamic 64 ± 8 Elastic wave velocities Rummel and König (1991)
Dynamic 71 ± 5 Elastic wave velocities Rummel et al. (1992)
Dynamic 69 Elastic wave velocities Rummel (1992)
Dynamic 59 ± 6 (axial) Elastic wave velocities Rummel and Schreiber (1993)
65 ± 10 (radial)