Study on Identification of Construction Method for Ultra-Large-Span Tunnel

Table 9

Index calculation value of tunnel stability.

Test no.	Test code	Stability	F
1	A1B1C1	Unstable	5.3
22	A5B2C1	Unstable	6.4
6	A2B1C2	Unstable	6.8
11	A3B1C3	Unstable	8.1
21	A5B1C5	Unstable	8.4
16	A4B1C4	Unstable	8.5
18	A4B3C1	Unstable	9.1
23	A5B3C2	Unstable	12.7
14	A3B4C1	Unstable	13.1
2	A1B2C2	Unstable	15.2
17	A4B2C5	Unstable	17.1
7	A2B2C3	Unstable	17.2
12	A3B2C4	Unstable	17.5
10	A2B5C1	Unstable	17.8
19	A4B4C2	Unstable	18
24	A5B4C3	Unstable	22.3
15	A3B5C2	Stable	23.8
13	A3B3C5	Stable	24.6
8	A2B3C4	Stable	25.9
3	A1B3C3	Stable	26.6
20	A4B5C3	Stable	29
25	A5B5C4	Stable	30.9
9	A2B4C5	Stable	36.3
4	A1B4C4	Stable	40.1
5	A1B5C5	Stable	51.9