Mining-Induced Redistribution of the Abnormal Stress under the Close Bearing Coal Pillar for Entry Design

Table 2

Parameters of the strain softening model for coal pillar.

Plastic strain	0	0.01	0.02	…	0.5
Friction angle (°)	9.5	8.5	7.5	…	7.5
Cohesion (MPa)	1.6	1.2	0.9	…	0.9