Estimation of Rock Burst Grades Using Rock Mass Strength

Table 1

σ_max and σ_c at different measurement points.

No. of measurement points	σmax (MPa)	σc (MPa)
1	49.7	40.62
2	23.5	35.63
3	22.2	84.54
4	34.8	30.43
5	19.9	22.15
6	43.3	21.08
7	31.8	26.51
8	28.6	43.49
9	31.0	101.27
10	33.3	62.88
11	45.4	100.97
12	36.6	43.15
13	48.6	123.03
14	28.8	78.87
15	29.6	88.76
16	28.7	41.10
17	24.9	74.83
18	35.8	48.40