Advances in Civil Engineering / 2020 / Article / Tab 12

Research Article

Estimation of Rock Burst Grades Using Rock Mass Strength

Table 12

Estimation criteria of rock burst grades under different conditions.

No. of setsRock burst estimation criterion
Slight rock burstMedium rock burstStrong rock burstViolent rock burst

1>0.1670.066∼0.1670.012∼0.066≤0.012
2>0.1670.062∼0.1670.012∼0.062≤0.012
3>0.1670.066∼0.1670.012∼0.066≤0.012
4>0.1560.066∼0.1560.012∼0.066≤0.012
5>0.1670.066∼0.1670.019∼0.066≤0.019
6>0.1670.066∼0.1670.012∼0.066≤0.012
7>0.1670.062∼0.1670.012∼0.062≤0.012
8>0.1670.066∼0.1670.012∼0.066≤0.019
9>0.1670.066∼0.1670.012∼0.066≤0.012
10>0.1670.062∼0.1670.012∼0.062≤0.012
11>0.1670.066∼0.1670.012∼0.066≤0.019
12>0.1670.066∼0.1670.012∼0.066≤0.012

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