Table 3 Dynamic load parameters.

From: Failure control of large-scale exposed tunnels under the combined effects of excavation damage and dynamic disturbance at a depth of 1240 m

Stress wave

Wave speed (m/s)

Peak acceleration(m/s)

Load(MPa)

stress wave I

5120

13.27

100

stress wave II

5120

9.29

70

stress wave III

5120

5.31

40