A Risk Assessment Method for Rockburst Based on Geodynamic Environment

Table 4

Distribution of rockburst coal mines in different crust movement rates.

Vertical crustal movement rate ( mm·a-1)	-6≦x<-5	-5≦x<-4	-4≦x<-3	-3≦x<-2	-2≦x<-1	-1≦x<0
The number of rockburst mines	7	5	4	0	0	41
Vertical crustal movement rate ( mm·a-1)	0≦x<1	1≦x<2	2≦x<3	3≦x<4	4≦x<5
The number of rockburst mines	60	7	8	10	18