Study of a Space-Time Monitoring of High-Speed Railway Underline Structure Using Distributed Optical Vibration Sensing Technology

Table 2

Fault distribution in the cement asphalt layer.

Fault units	Fault length (m)	Fault area (m^2)	Fault percentage
1	0	0	0
2	0.5	0.015	10
3	1	0.03	20
4	1.5	0.045	30
5	2	0.06	40
6	2.5	0.075	50