Acceleration Characteristics of a Rock Slide Using the Particle Image Velocimetry Technique

Table 3

Displacement evolution versus time (m).

	The top of rock slide	Sliding surface	Sliding body	Sliding bed
Initial stage (0~0.04 s)	0	0	0	0
	−0.05	0.02	−0.01	−0.01
The coalescence stage (0.04~0.08 s)	−0.14	0.11	0.01	−0.01
	−0.23	0.29	0.10	−0.04
The postcoalescence stage (0.08~0.12 s)	−0.36	0.53	0.19	−0.08