为研究锚杆锚固对节理岩体剪切性能的影响规律及锚杆抗剪作用机制，开展不同锚杆倾角及不同法向应力作用下加锚节理岩体室内剪切试验研究，探究加锚节理岩体在法向力及剪切力作用下的变形和受力特征，对比分析节理岩体锚固前与锚固后的剪切变形规律，讨论锚杆倾角、节理面法向应力等因素对节理岩体抗剪性能的影响。试验结果表明，锚杆锚固能够有效地增加节理面的黏聚力和内摩擦角，提高节理岩体的抗剪强度；锚杆倾角对加锚节理岩体的抗剪强度及剪切变形规律有重大影响，较大的锚杆倾角有利于发挥锚杆的“销钉”抗剪作用；节理岩体施加锚杆后其剪力–位移曲线存在弹性阶段、屈服阶段及塑性变形阶段3个区段；在锚杆倾角相同的条件下加锚节理岩体的抗剪强度随节理面法向应力的增加而增大。分析试验后试件破坏形态可知，加锚节理岩体中锚杆的屈服破坏主要发生在节理面附近的区段，岩体材料由于锚杆横向的挤压作用，也会在节理面附近发生局部破坏现象。

The indoor shear tests of anchored jointed rock mass under different bolt angles and different normal stresses are carried out to study the law and the shear resistance mechanism of bolt anchoring on shear properties of jointed rock mass. The deformation and stress characteristics of anchored jointed rock mass under the action of normal and shearing force are explored; the shear deformation law of the jointed rock mass before and after anchoring is compared and analyzed; and the effects of bolt angle, normal stress of the joint surface and other factors on the shear resistance of jointed rock are discussed. The experimental results show that the shear strength of jointed rock mass can be greatly improved by bolt anchoring as the increase of the cohesive force and internal friction angle after bolting; the bolt angle has significant influence on the shear strength and shear deformation of the anchored jointed rock mass; and the larger bolt angle is helpful to mobilize the shear resistance of the bolts. The shear-displacement curves of the jointed rock mass have three segments after anchoring, i.e. the elastic stage, the yield stage and the plastic deformation stage. The shear strength of anchored jointed rock mass is improved with the increase of the normal stress of joint plane under the same bolt angle. It is found that the yield failure of bolts in the jointed rock mass occurs mainly in the section near the joint plane; and the local damage of the rock material occurs near the joint plane due to the lateral compression of the bolts.