Table 1 Micro-Parameters of Specimens.

From: Numerical simulation of strength and failure analysis of heterogeneous sandstone under different loading rates

Parameters

Emod (GPa)

Krat

Fric

Pb_emod (GPa)

Pb_krat

Pb_ten (MPa)

Pb_coh (MPa)

pb_mcf

Rock matrix

1.4

1.5

0.5

3.0

1.5

16.0

25.0

0

Heterogeneous structure

0.7

1.5

0.5

1.5

1.5

8.0

12.5

0