Advances in Civil Engineering / 2020 / Article / Tab 4

Research Article

Estimation of Rock Burst Grades Using Rock Mass Strength

Table 4

Rock burst grades at various measurement locations using the ratio of σc to σmax.

No. of measurement pointsEstimated results using CHEGI criterionActual field grades of rock burst

10.82ViolentStrong
21.51StrongMedium
33.80MediumSlight
40.87ViolentStrong
51.11StrongMedium
60.48ViolentStrong
70.83ViolentStrong
81.52StrongMedium
93.26SlightMedium
101.88StrongMedium
112.22MediumMedium
121.17StrongStrong
132.53MediumMedium
142.74MediumMedium
152.99MediumMedium
161.43StrongMedium
173.00MediumMedium
181.35StrongMedium

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