Table 3 Comparative analysis of stress at the elastic–plastic boundary under different methods (MPa).

From: An new elastic–plastic analytical solution of circular tunnel under non-axisymmetric conditions

Internal load (MPa)

Lateral pressure coefficient

0.5

1

1.5

Methods

1

4

1

4

1

4

0.0

Radial stress

3.24

2.90

2.80

2.40

1.67

1.64

Circumference stress

13.17

14.14

11.85

12.60

9.21

10.13

0.1

Radial stress

3.13

2.96

2.58

2.24

1.95

1.70

Circumference stress

13.61

13.92

12.08

12.40

9.31

10.21

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