Table 1 Physical and mechanical parameters of structural planes.

From: Research on stress field inversion and large deformation level determination of super deep buried soft rock tunnel

 

Density (kN/m3)

Poisson's ratio

Modulus of deformation (GPa)

Cohesion (MPa)

Internal friction angle (°)

Expansion angle (°)

Structural planes

–

–

–

0.02

15

0

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