Analysis of Mining Subsidence Characteristics and Deformation Prediction considering Size Parameters and Mechanical Parameters

Table 2

Results of grey relational degree analysis.

Index	Degree of association (resolution coefficient is 0.5)	Relational degree ranking
Thickness of coal	0.922	1
Internal friction angle	0.876	2
Thickness of loose layer	0.865	3
Tensile strength	0.861	4
Thickness of bedrock	0.845	5
Modulus of elasticity	0.843	6
Cohesion	0.799	7