Research on the Movement Law of Roof Structure in Large-Inclined Coal Seam Working Face: A Case Study in Liu.Pan.Shui. Mining Area

Table 1

Liu.Pan.Shui. coal mine measured geological data parameter table.

Serial number	Parameter name	Symbol	Unit dimension	Value
1	Average key rock beam length	L	m	3.5
2	Coal seam dip	α	rad	42
3	Mining thickness	M	m	2.3
4	Average thickness of key rock beam	H	m	1.2
5	Volume stress	Γ	kN/m^3	23000
6	Buried depth	H	m	140
7	Coefficient of direct roof crushing expansion	Kp	Dimensionless	1.2
8	Angle of roof beam fracture	Θ	rad	15