Table 8 Value range of attenuation coefficient and batch size.

From: Analysis and construction of the coal and rock cutting state identification system in coal mine intelligent mining

Attenuation coefficient

0.5

0.53

0.55

0.6

0.63

0.65

0.7

0.73

0.75

0.8

0.83

0.85

0.9

0.93

0.95

Batch size

20

23

25

27

30

32

35

37

40

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