Table 1 Mechanical parameters of 60° jointed slate.

From: Calculation of hole spacing and surrounding rock damage analysis under the action of in situ stress and joints

Density

/(kg m−3)

Elastic modulus

/GPa

Poisson's ratio

Uniaxial compressive strength/MPa

Biaxial isostatic strength/MPa

Uniaxial tensile strength/MPa

Dynamic tensile strength/MPa

2752

38.03

0.27

47.4

55.4

12.03

12.03

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