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

Table 3

Distribution of data on cover depth and span.

Span	Cover depth
	10	32	45	90	95	100	110	175
6.2	2	—	—	—	—	—	—	—
12.26	—	3	4	—	—	8	—	—
15.2	2	12	—	—	4	—	8	6
17.3	—	—	—	11	—	—	—	—

indicates there are 2 data when the cover depth is 10 m and the span is 6.2 m. indicates no data when the cover depth is 32 m and the span is 6.2 m.