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

Table 5

Orthogonal test scheme and results (maximum horizontal deformation).

Test number	Filling rate (%)	Filling body strength (MPa)	Key layer thickness (m)	Loose layer thickness (m)	Maximum horizontal deformation (mm/m)
1	51	2.0	40	160	0.081
2	51	3.0	70	200	0.055
3	51	4.0	100	240	0.047
4	60	2.0	70	240	0.056
5	60	3.0	100	160	0.029
6	60	4.0	40	200	0.061
7	69	2.0	100	200	0.016
8	69	3.0	40	240	0.017
9	69	4.0	70	160	0.014