Advances in Civil Engineering / 2020 / Article / Tab 7

Research Article

Estimation of Rock Burst Grades Using Rock Mass Strength

Table 7

Estimation results of the ratio of σcm to σc various measurement points.

No. of measurement pointsActual grades of field rock burst

10.0499Strong
20.0905Medium
30.1850Slight
40.0424Strong
50.0762Medium
60.0236Strong
70.0378Strong
80.0738Medium
90.1497Medium
100.1068Medium
110.1157Medium
120.0573Strong
130.0932Medium
140.1241Medium
150.1457Medium
160.0745Medium
170.1271Medium
180.0754Medium

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