Statistical Analysis of Influence of Cover Depth on Loess Tunnel Deformation in NW China

Table 4

ANOVA of deformation with different cover depth levels.

Span	Cover depth levers	F	F crit	P	Significance
CS
12.2	32, 45	0.77	10.13	0.445	Not sig.
	45, 100	8.12	5.12	0.019	Sig.
15.2	10, 32	1.13	4.96	0.312	Not sig.
	32, 95, 110, 175	17.74	2.99	≤0.001	Sig.
HC
12.2	32, 45	0.18	6.61	0.668	Not sig.
	45, 100	14.98	4.96	0.003	Sig.
15.2	32, 95, 110, 175	34.63	3.03	≤0.001	Sig.