Table 18 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)

Original explosives

8.04

50.25

28.92

13.96

25.2925

Low density explosive

6.30

50.05

26.33

13.31

23.9975

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