The Effect of Joint Damage on a Coal Wall and the Influence of Joints on the Abutment Pressure on a Fully Mechanised Working Face with Large Mining Height

<div>Abutment pressure distribution in the limit equilibrium area with different joint spacings. (a) Dip angle of joint of 45°. (b) Dip angle of joint of 135°.</div>

Shock and Vibration

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Figure 18

Figure 18: The Effect of Joint Damage on a Coal Wall and the Influence of Joints on the Abutment Pressure on a Fully Mechanised Working Face with Large Mining Height 

Figure 18 | The Effect of Joint Damage on a Coal Wall and the Influence of Joints on the Abutment Pressure on a Fully Mechanised Working Face with Large Mining Height 