Table 6 Physical and mechanical parameters of structural plane of fissured coal.

From: Study on failure mechanism and energy dissipation law of single fissured coal in different tectonic stress areas

Type

Ka/MPa⋅mm-1

Ks/ MPa⋅mm-1

φj/°

Cj/MPa

Rj/MPa

Fissured coal

15.00

10.00

42

0.9

0.05

  1. Ka is the joint normal stiffness; Ks is the joint shear stiffness; φj is the internal friction angle of joint; Cj is the joint cohesion; Rj is joint tensile strength. The model is carried out by the Mohr–Coulomb failure criterion.
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