Disaster Control of Roof Falling in Deep Coal Mine Roadway Subjected to High Abutment Pressure

Table 2

Basic parameters.

Parameter	Value	Parameter	Value	Parameter	Value
Depth of coal seam,	992.8 m	Young’s modulus of the coal seam,	0.53 GPa	Thickness of immediate roof,	2.5 m
Unit weight of overburden,	0.025 MN/m^3	Poisson’s ratio of the coal seam,	0.37	Range of side abutment pressure,	12.5 m
Thickness of coal seam,	5.0 m	Span of the roadway,	5.0 m	Peak value of front abutment pressure,	25 MPa