Research Article
Estimation of Rock Burst Grades Using Rock Mass Strength
Table 17
Comparison of estimation results.
| Rock burst estimation from [29] and [34] | CHEGI criterion | Modified criterion | Actual rock burst grades | Sr. no | Chainage (km) | Overburden (m) | | | Rock burst grade | | Rock burst grade | GSI | | Rock burst grade |
| 1 | 09 + 700.00 | 1200 | 1.49 | 1.80 | Heavy | 1.49 | Strong | 47 | 0.051 | Strong | Heavy | 2 | 09 + 675.30 | 1245 | 1.47 | 1.83 | Heavy | 1.47 | Strong | 40 | 0.059 | Strong | Heavy | 3 | 09 + 622.66 | 1380 | 2.56 | 0.86 | Heavy | 2.56 | Medium | 49 | 0.11 | Medium | Slight | 4 | 07 + 970.73 | 1900 | 1.49 | 1.60 | Heavy | 1.49 | Strong | 63 | 0.171 | Slight | Slight | 5 | 07 + 959.89 | 1900 | 1.30 | 1.83 | Heavy | 1.30 | Strong | 62 | 0.133 | Medium | Slight | 6 | 07 + 941.71 | 1900 | 1.42 | 1.68 | Heavy | 1.42 | Strong | 63 | 0.163 | Medium | Slight | 7 | 07 + 937.23 | 1900 | 1.41 | 1.70 | Heavy | 1.41 | Strong | 62 | 0.150 | Medium | Slight | 8 | 07 + 926.18 | 1950 | 0.99 | 2.42 | Heavy | 0.99 | Violent | 64 | 0.103 | Medium | Slight | 9 | 07 + 915.57 | 1950 | 1.34 | 1.78 | Heavy | 1.34 | Strong | 64 | 0.159 | Medium | Slight | 10 | 07 + 910.39 | 1950 | 1.56 | 1.53 | Heavy | 1.56 | Strong | 65 | 0.204 | Slight | Slight | 11 | 07 + 907.12 | 1950 | 1.40 | 1.71 | Heavy | 1.40 | Strong | 64 | 0.168 | Slight | Slight | 12 | 07 + 889.00 | 1950 | 0.84 | 2.84 | Heavy | 0.84 | Violent | 64 | 0.106 | Medium | Slight |
|
|