Influence of Fault on the Surrounding Rock Stability for a Mining Tunnel: Distance and Tectonic Stress

Table 2

Max stress and min stress in sprayed concrete layer under different cases.

Distance	Middle point of left sidewall		Top point of crown		Middle point of right sidewall
	σmax	σmin	σmax	σmin	σmax	σmin
No fault	0.62	0.59	−0.72	−0.74	0.61	0.57
0.2 spans	−1.56	−1.73	4.02	3.15	−1.67	−1.82
0.5 spans	−0.18	−0.25	0.63	0.45	−0.20	−0.28
1.0 span	0.40	0.38	−0.37	−0.45	0.40	0.39