Table 2 Calculated values of Erp and Err by Eqs. (11) to (14).

From: Evaluation of input geological parameters and tunnel strain for strain-softening rock mass based on GSI

GSIp

Equation (11)

Equation (12)

Equation (13)

Equation (14)

GSIr

Equation (11)

Equation (12)

Equation (13)

Equation (14)

25

 

3.162

2.700

1.050

17.883

 

2.099

1.198

0.953

30

 

4.217

4.288

1.645

20.069

 

2.381

1.575

1.126

35

 

5.623

6.400

2.567

21.897

 

2.645

1.946

1.295

40

 

7.499

9.113

3.986

23.403

 

2.885

2.291

1.452

45

 

10.000

12.500

6.138

24.623

 

3.094

2.599

1.592

50

10

13.335

16.638

9.341

25.585

 

3.271

2.861

1.712

55

20

17.783

21.600

13.965

26.320

 

3.412

3.072

1.809

60

30

23.714

27.463

20.365

26.852

 

3.518

3.232

1.883

65

40

31.623

34.300

28.719

27.205

 

3.590

3.340

1.934

70

50

42.170

42.188

38.828

27.399

 

3.631

3.401

1.962

75

60

56.234

51.200

50.000

27.453

 

3.642

3.418

1.970

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