A Mathematical Model to Study the Coupling Effect of Deformation-Seepage-Heat Transfer on Coalbed Methane Transport and Its Simulative Application

Table 2

Modeling parameters for the numerical simulation.

Parameter name	Numerical value	Unit
Young’s modulus of coal seams, E
Poisson’s ratio of coal seams, V		—
Aerodynamic viscosity of coal seam,
Unit weight of coal mass, γ
Porosity,		—
Coalbed methane density,
Adsorption constant of coalbed methane,
Coefficient of adsorption constant, , affected by temperature	0.003	—
Adsorption constant of coalbed methane,
Coefficient of adsorption constant, , affected by temperature	0.003	—
Water permeability coefficient,
Fissure permeability coefficient,
Heat conductivity coefficient of coal,
Heat capacity coefficient of coalbed methane,	2.16
Heat capacity coefficient of water,	4.117