Model Tests on the Antibreaking Countermeasures for Tunnel Lining Across Stick-Slip Faults

Table 7

Increase multiple of the minimum value of the safety factor.

Operating conditions	The minimum value of the safety factor	Increase multiple (relative to the operating condition 1)	Increase multiple (relative to the operating condition 2)
1	0.19	—	0.49
2	0.40	2.06	—
3	4.13	21.16	10.29
4	3.27	16.78	8.15
5	4.96	25.45	12.37