Table 1 Results of triaxial compression test.

From: Experimental study on failure mode and fracture evolution characteristics of red shale in Kaiyang Phosphorus mining area

Number

Bedding dip /°

Sample size /mm

σc/MPa

E/GPa

D

H

1

0°

49.21

100.28

128.83

26.68

2

49.13

100.54

125.15

25.26

3

49.16

100.68

127.61

25.56

4

30°

49.10

99.75

51.86

25.36

5

49.25

100.16

49.41

23.95

6

49.29

100.12

50.52

23.52

7

60°

49.31

99.63

68.99

22.92

8

49.15

100.25

68.12

20.85

9

49.18

100.31

69.35

20.16

10

90°

49.31

99.12

105.36

16.45

11

49.12

100.58

104.62

16.09

12

49.32

100.12

103.85

15.23

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