Table 3 The proportion of escaped dust.

From: Influences of ventilation parameters on flow field and dust migration in an underground coal mine heading

Working condition

Air cylinder to the bottom plate 105 cm

Air cylinder to the bottom plate 75 cm

Air cylinder to the bottom plate 45 cm

Air cylinder to the bottom plate 15 cm

Number Tracked

64

64

62

64

Number Escaped

32

34

26

23

Proportion/%

50

53

42

36

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