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Advances in Civil Engineering
/
2021
/
Article
/
Tab 4
/
Research Article
Mining-Induced Redistribution of the Abnormal Stress under the Close Bearing Coal Pillar for Entry Design
Table 4
Basic properties of the gob material.
Density (kg/m
3
)
Bulk modulus (GPa)
Shear modulus (GPa)
Friction angle (°)
Dilation angle (°)
1200
5.56
2.27
8.96
6.28