Table 16 Peak stress statistics for monitoring points by programme.

From: Research on the optimization of optimal blasting parameters and fragmentation control based on coal seam geological conditions

Scheme

Stress at point A (MPa)

Stress at point B (MPa)

Stress at point C (MPa)

Stress at point D (MPa)

Average stress (MPa)

Air interval

8.02

57.37

30.99

14.47

27.7125

Water interval

8.02

57.64

35.02

14.40

28.77

Pulverized coal interval

8.04

50.25

28.92

13.96

25.2925

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