Depth (m)

P_f (MPa)

P_l (MPa)

σ_hs (MPa)

P_l* (MPa)

E_M (MPa)

E_M/P_l

1.50

0.20

0.33

0.013

0.31

6.7

21.5

3.00

0.22

0.34

0.027

0.31

6.6

21.2

4.50

0.36

0.66

0.040

0.62

5.1

8.2

6.00

0.37

0.68

0.054

0.62

5.2

8.3

7.50

0.63

1.07

0.067

1.00

9.8

9.7

9.00

0.70

1.26

0.081

1.18

8.0

6.8

10.50

0.49

1.22

0.094

1.12

11.7

10.4

12.00

0.69

1.17

0.108

1.07

9.4

8.8

13.50

1.06

1.29

0.121

1.17

13.5

11.6

15.00

1.07

1.43

0.135

1.29

12.7

9.8

16.50

1.37

1.59

0.148

1.44

13.1

9.1

18.00

1.26

1.56

0.162

1.40

14.3

10.2

19.50

1.12

1.80

0.175

1.62

15.4

9.5

21.00

1.42

1.82

0.189

1.64

15.8

9.7

22.50

0.87

1.81

0.202

1.61

13.9

8.7

24.00

0.92

1.84

0.216

1.62

12.9

7.9

25.50

1.19

1.92

0.229

1.69

17.2

10.2

27.00

1.73

1.81

0.243

1.57

22.3

14.2

28.50

1.63

1.98

0.256

1.72

14.0

8.1

30.00

1.22

1.83

0.270

1.56

17.6

11.3