Interaction of Cleat-Matrix on Coal Permeability from Experimental Observations and Numerical Analysis

Table 2

Physical parameters used in the numerical simulation.

Symbol	Value	Parameter	Unit
	3766 [41]	Coal Young’s modulus	MPa
	1461 [41]	Cleat Young’s modulus	MPa
	6366 [41]	Matrix Young’s modulus	MPa
	0.35 [47]	Poisson’s ratio of cleat
	0.35 [47]	Poisson’s ratio of matrix
		Gas viscosity
	0.026	Initial matrix porosity
	0.026	Initial cleat porosity
		Initial cleat permeability
		Initial matrix permeability
	0.1	Initial pore pressure	MPa
	Test value	Upstream pressure	MPa
	Test value	Confining pressure	MPa
	1250	Coal density	kg/m^3
	0.1	Atmosphere pressure	MPa
	1	Shape factor	m^−2