Table 1 The measured points of failure at the stress space for the marble (recalculated values)24.

From: Brittle-ductile transition stress of different rock types and its relationship with uniaxial compressive strength and Hoek–Brown material constant (mi)

No. samples

Confining pressure (σ3 = σ2) (MPa)

Axial pressure (σ1) (MPa)

I

0

138

II

24

237

III

51

319

IV

69

361

V

86

411

VI

167

Min. 654

VII

252

Min. 759

VIII

330

Min. 837