Pre-stressed bolt anchorage is the key technology for jointed rock masses in rock tunnelling, slope treatment and mining engineering. To investigate the mechanical properties and reinforcement effect of jointed rock masses with pre-stressed bolts, in this study, uniaxial compression tests were conducted on specimens with different anchoring types and flaw inclination angles. ABAQUS software was used to verify and supplement the laboratory tests. The laws of the uniaxial compressive strength (UCS) obtained from the numerical simulations and laboratory tests were consistent. The results showed that under the same flaw angle, both the UCS and elastic modulus of the bolted specimens were improved compared with those of the specimens without bolts and the improvements increased with an increase in the bolt pre-stress. Under the same anchoring type, the UCS and elastic modulus of the jointed specimens increased with an increase in the flaw angle. The pre-stressed bolt could not only restrain the slip of the specimens along the flaw surface but also change the propagation mode of the secondary cracks and limit the initiation of cracks. In addition, the plot contours of the maximum principal strain and the Tresca stress of the numerical models were influenced by the anchoring type, flaw angle, anchoring angle and bolt position.

预应力锚固锚固技术是岩石隧道，边坡处理和采矿工程中节理岩体的关键技术。为了研究带有预应力螺栓的节理岩体的力学性能和加固效果，本研究对具有不同锚固类型和缺陷倾角的标本进行了单轴压缩试验。ABAQUS软件用于验证和补充实验室测试。从数值模拟和实验室测试获得的单轴抗压强度（UCS）定律是一致的。结果表明，在相同的缺陷角度下，与无螺栓试样相比，螺栓试样的UCS和弹性模量均有所提高，且随着螺栓预应力的增加，其UCS和弹性模量均有所提高。在相同的锚定类型下，接头试样的UCS和弹性模量随着缺陷角的增加而增加。预应力螺栓不仅可以抑制试样沿着缺陷表面的滑动，而且可以改变次生裂纹的传播方式，并限制裂纹的产生。此外，数值模型的最大主应变和Tresca应力的曲线轮廓受锚固类型，缺陷角度，锚固角度和螺栓位置的影响。