Table 1 Track rockfall experimental scheme.

From: Monitoring and early warning method for a rockfall along railways based on vibration signal characteristics

 

Experiment 1

Experiment 2

Experiment 3

Experiment 4

Experiment 5

Experiment 6

Hit location

Center of sleeper

Center of sleeper

Edge of the sleeper near sensors

Rail buried with sensors

Rail away from sensors

Rail away from sensors

Hit distance (m)

0

5

5

0

0

5

Rockfall quality (kg)

10.4

10.4

10.4

10

10

10