Effect of Confining Pressure on Mechanical and Energy Conversion Properties of Gas-Containing Coal under Loads

Table 1

Macro-material parameters of coal sample.

Elastic modulus /GPa	9.534
Poisson’s ratio	0.15
Compressive strength /MPa	64
Tensile strength /MPa	6.4
Internal friction coefficient	0.3536
Density /kg/m^3	1650