Dynamic Response of Seismic Dangerous Rock Based on PFC and Dynamics

Table 1

Weathering situation of each model cavity and fissure.

Model	Crack depth (m)	Fracture penetration rate (%)	Cavity thickness (m)
M1	4.125	25	4.5
M2	6.2	37.5	3
M3	8.25	50	1.5
M4	10.31	62.5	0