Table 7 Measured parameters of peripheral eyes in test section “System for detecting the effects of tunnel blasting” (left line).

From: Study on the influence of peripheral eye on over-excavation during mountain tunnel blasting construction

Serial number

Position (X)

Position (Y)

Horizontal inclination (degrees)

Vertical inclination (degrees)

Set the amount of explosive

Regional division

1

38.7

46.4

4.6

− 7.8

0.6

c area

2

20.1

124.6

7.9

− 5.2

0.6

3

15.3

236.2

9.3

− 5.8

0.6

4

11

331.8

− 10.1

− 6.5

0.6

5

22.1

400.8

− 13.5

− 5.2

0.6

6

53.5

495.4

− 5.6

5.6

0.6

7

83.1

552

3.5

10

0.6

8

86.6

606.4

− 12

0.6

0.6

9

169.3

716.8

11.9

6.7

0.6

a area

10

240.6

784.9

4.1

5.7

0.6

11

317.4

834.5

− 10.6

− 8.6

0.6

12

456.2

900.4

− 15.2

− 6

0.6

13

546.4

927.2

− 10.9

10.9

0.6

14

617.6

942.7

− 9.4

− 10

0.6

15

692.9

949.2

1.9

− 16.9

0.6

16

750.3

950.9

− 17.9

5.5

0.6

17

848

941.3

− 20.5

16.6

0.6

b area

18

940.6

921

− 31.4

17

0.6

19

1,041

891.2

− 35.7

18.9

0.6

20

1,130.6

851.8

− 36.7

11.4

0.6

21

1,225

798.9

− 33.2

18.3

0.6

22

1,295.9

755.2

− 29.5

24.2

0.6

23

1,366.6

696.3

− 34.3

27.4

0.6

24

1,418.2

651.3

− 10.3

15.6

0.6

25

1,472.4

590.3

− 20

− 19.4

0.6

d area

26

1,521

506.9

14.1

− 14

0.6

27

1,548.2

427.8

− 30.4

− 23.5

0.6

28

1,563.2

322.2

− 22.5

− 26.2

0.6

29

1,565.5

240.8

− 21.4

− 25.7

0.6

30

1,567.3

148.8

− 9.1

0.5

0.6

31

1,579.3

31.8

− 11.2

− 17.5

0.6

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