Determination of Width of Sectional Coal Pillars in the Working Face of Burst-prone Inclined Thick Coal Seams

<div>Field photos of gob-side entry for various sectional coal pillar widths: (a) sectional coal pillar width 7 m; (b) sectional coal pillar width 4 m</div>

Shock and Vibration

fig9

Figure 9

Figure 9: Determination of Width of Sectional Coal Pillars in the Working Face of Burst-prone Inclined Thick Coal Seams 