Study on Hydraulic Connection and Seepage Law of Goaf Groups in Coal Mine Underground Reservoir

Table 2

Parameter table of the model.

Parameter name	Coal	Fine sandstone	Siltstone	Water	Source
Elastic modulus (MPa)	700	953	995	—	Laboratory data
Poisson’s ratio	0.28	0.26	0.22	—	Laboratory data
Density (kg·m^-3)	1400	2570	2590	1000	Laboratory data
Yield stress (MPa)	6			—	Laboratory data
Dynamic viscosity (Pa·s)	—	—	—		Laboratory data [15]
Porosity	0.05	0.03	0.03	—	Laboratory data [15]