Numerical Study on Soft Coal Pillar Stability in an Island Longwall Panel

Table 1

Parameters of the soft coal seam for the strain-softening Mohr–Coulomb.

Strain (mm)	Cohesion (MPa)	Internal friction angle (°)
0	2.9	21
0.01	1.8	19
0.02	1.1	18
0.03	0.7	16
1	0.4	16