Research on the Redistribution Law of Lateral Mining Stress and the Bearing Characteristics of Section Coal Pillar in Extra-Thick Fully Mechanized Top-Coal Caving Mining

Table 4

Stress-strain relationship of the goaf medium of the double-yield model.

Strain	Stress (MPa)
0.01	0.003
0.04	0.015
0.07	0.028
0.1	0.042
0.13	0.059
0.16	0.079
0.19	0.103
0.22	0.131
0.25	0.166
0.28	0.210
0.31	0.267
0.34	0.343
0.37	0.452
0.40	0.620
0.43	0.910
0.46	1.533
0.49	3.842
0.50	7.122