Study of Shear Capacity of Jointed Rock Mass with Prestressed Anchor Bolt

Table 4

The shear strength with different normal stress conditions.

Normal stress (MPa)	Method	Shear strength increased (kN)	Axial force		Pin resistance
			Force (kN)	Proportion (%)	Force (kN)	Proportion (%)
0.2	Model test	4.70	2.01	42.70	2.69	57.30
	Theoretical	5.60	3.08	55.00	2.52	45.00
0.35	Model test	7.00	4.24	60.50	2.76	39.50
	Theoretical	7.73	5.04	65.20	2.69	34.80
0.7	Model test	3.80	0.82	21.60	2.98	78.40
	Theoretical	4.67	1.38	29.60	3.29	70.30