Estimation of Rock Burst Grades Using Rock Mass Strength

Table 16

Comparison between actual rock burst grades and estimated results.

Various criteria	Underestimate rate (%)	Overestimate rate (%)	Accuracy rate (%)	Misestimate rate (%)
Barton’s criterion	0	50	50	50
Rehman’s criterion	0	50	50	50
Tao’s criterion	0	50	50	50
CHEGI’s criterion	0	100	0	100
Modified criterion	0	0	100	0