Study on the Division of the Affected Zone under Construction Unloading and Its Construction Sequence of the Multiline Parallel River-Crossing Pipe Jacking

Table 4

FOS calculation results.

= 2.0 m		= 5.0 m		= 8.0 m
D (m)	FOS	D (m)	FOS	D (m)	FOS
1.0	1.15	1.0	1.05	1.0	—
2.0	1.32	2.0	1.08	2.0	—
3.0	1.46	3.0	1.19	3.0	1.01
4.0	1.58	4.0	1.30	4.0	1.11
5.0	1.68	5.0	1.40	5.0	1.20
6.0	1.78	6.0	1.45	6.0	1.27
7.0	1.83	7.0	1.48	7.0	1.29
8.0	1.88	8.0	1.50	8.0	1.30
9.0	1.88	9.0	1.50	9.0	1.30