Table 6 In-situ stress scenarios used in the simulations.

From: Exploring the time-dependent behaviors of the rock mass roof of tunnels in open underground spaces of coal mines through numerical investigation

Stress scenario no

Stress direction-angle (degree)

Horizontal stress-maximum (MPa)

Horizontal stress-minimum (MPa)

Vertical stress (MPa)

1

30.0

5.221

3.851

2.761

2

30.0

6.550

3.8505

2.760

3

30.0

6.892

3.851

2.761