Table 2 Modal analysis of anchor system.

From: Analysis of drilling vibration characteristics of anchoring system in coal mine

Modal order

Frequency/HZ

Deformation/mm

1

10.325

2.08

2

13.905

1.79

3

29.532

2.95

4

39.619

3.12

5

51.489

5.86

6

57.669

3.97