Serial number

Surrounding rock strength/MPa (x1)

Lateral pressure coefficient (x2)

Temperature/˚C

(x3)

Anchoring length /cm (x4)

Ultimate anchorage force/kN (Y)

1

3.00

0.80

30.00

16.00

9.75

2

3.00

1.20

45.00

48.00

22.50

3

3.00

1.00

60.00

32.00

10.50

4

6.00

1.20

30.00

32.00

26.25

5

6.00

1.00

45.00

16.00

15.00

6

6.00

0.80

60.00

48.00

28.75

7

9.00

0.80

45.00

32.00

23.25

8

9.00

1.20

60.00

16.00

15.75

9

9.00

1.00

30.00

48.00

38.25