Modeling the Spatial and Temporal Evolution of Stress during Multiworking Face Mining in Close Distance Coal Seams

Table 1

Boundary conditions and initial conditions.

Boundary conditions	Displacement boundary	Stress boundary (MPa)	Initial stress conditions	Value (MPa)
Left and right boundary conditions	0			26.5
Front and back boundary conditions	0			15.0
Bottom boundary condition	0			17.5
Top boundary condition		10