Sensitivity Analysis and Numerical Simulation Study on Main Controlling Factors of Surface Movement and Deformation in Strip Filling Mining under Thick Unconsolidated Layers

Table 6

Orthogonal range analysis results (maximum horizontal deformation).

	Factor	Filling rate	Filling body strength	Key layer thickness	Loose layer thickness
Level summation	K1	1.50	1.26	1.26	1.07
	K2	1.06	0.76	1.00	0.96
	K3	0.37	0.91	0.67	0.90
Level summation mean	K1	0.50	0.42	0.42	0.36
	K2	0.35	0.25	0.33	0.32
	K3	0.12	0.30	0.22	0.30
Range	R	0.38	0.17	0.20	0.06
Importance queue		1	3	2	4