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σ1(MPa)
σ3 (MPa)
Bineshian Criterion R^2 = 0.980
Mohr-Coulomb R^2 = 0.728
Observed Data
CQD = E UCS > 130 MPa
𝜎1 = 𝜎3 + 𝜎𝑐
𝜎 𝑐+𝜆𝜎3
𝜎 𝑐+𝜁𝜎3
𝜆 = 22.84
𝜁 = 11.10
𝛽 = 1.28
𝐶 = 162.45 MPa
𝜎 𝐶 = 207.94 MPa
𝜎𝑡 = - 9.31 MPa