Experimental Evaluation of Multiple Frost Heaving Parameters for Preflawed Granite in Beizhan Iron Mining, Xinjiang, China

Table 4

Statistical approach to select the RSM model for frost heaving force.

Source	Sum of squares	df	Mean square	value	value	Significant
Model	358.5505	14	25.61075	5.731599	0.0012	Yes
A-FW	44.9307	1	44.9307	10.05534	0.0068	Yes
B-FL	29.64163	1	29.64163	6.633696	0.0220	Yes
C-CT	38.41341	1	38.41341	8.59679	0.0109	Yes
D-RL	59.80868	1	59.80868	13.38498	0.0026	Yes
AB	1.863225	1	1.863225	0.416983	0.5289
AC	0.004225	1	0.004225	0.000946	0.9759
AD	0.0064	1	0.0064	0.001432	0.9703
BC	3.9601	1	3.9601	0.886257	0.3625
BD	7.868025	1	7.868025	1.760837	0.2058
CD	2.6896	1	2.6896	0.601923	0.4508
A^2	3.588091	1	3.588091	0.803003	0.3853
B^2	0.690416	1	0.690416	0.154513	0.7002
C^2	15.23388	1	15.23388	3.40929	0.0861
D^2	130.4771	1	130.4771	29.20034	<0.0001
Residual	62.55681	14	4.468343
Lack of fit	62.55681	10	6.255681
Pure error	0	4	0
Cor total	421.1073	28