Study on the Stage Failure Mechanism and Stability Control of Surrounding Rock of Repeated Mining Roadway

Table 2

Relationship between stress and strain for gob material in the double-yield model.

Strain	Stress (MPa)	Strain	Stress (MPa)	Strain	Stress (MPa)
0.01	0.33	0.08	3.83	0.15	13.40
0.02	0.68	0.09	4.61	0.16	16.31
0.03	1.08	0.10	5.52	0.17	20.18
0.04	1.51	0.11	6.57	0.18	25.6
0.05	2.00	0.12	7.81	0.19	33.61
0.06	2.53	0.13	9.31	0.20	46.88
0.07	3.14	0.14	11.12	0.21	72.92