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Research Article

Mechanical Analysis of Mining Stress Transfer on Isolated Island Face in Extra-Thick Fully Mechanized Top-Coal Caving Mining

Table 3

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

StrainStress (MPa)StrainStress (MPa)StrainStress (MPa)

0.010.0030.190.1030.370.452
0.040.0150.220.1310.400.620
0.070.0280.250.1660.430.910
0.10.0420.280.2100.461.533
0.130.0590.310.2670.493.842
0.160.0790.340.3430.507.122

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