Primary Investigation on Equivalent Anchoring Method of Jointed Rock Mass Tunnel and Its Engineering Application

Table 4

Equivalent simulation results by improving the friction angle of surrounding rock mass.

Improved parameter	Displacement of lining (mm)
	Vertical displacement of dome	Horizontal displacement of arch foot
With bolts installed	17.16	5.02
Without bolts installed	19.14	7.76
1.1	17.09	5.96
1.2	16.73	5.22
1.3	16.42	4.80
1.4	16.19	4.68
1.5	16.03	4.56
1.6	16.00	4.50
1.7	16.08	4.64
1.8	16.18	4.70
1.9	16.28	4.80
2.0	16.28	4.82