Abstract: In order to study the rockbolt reinforcement mechanical effect on jointed rock mass,some scaled bolts based on the prototype of mine bolt and molds with prefabricated joint surface were made using on 3D printing technology. Two kinds of joint anchorage samples with different angles were prepared and the change of surface strain displacement field during uniaxial compression test was captured using digital image correlation (DIC) monitoring method. The deformation and strength characteristics and anchoring mechanical effects of rock mass with two different angle anchorage joints were compared and analyzed. The results indicate that the joint angle has a significant influence on the strength and deformation characteristics of rock mass,the existence of joint reduces the bearing capacity of the rock mass. The strength of jointed rock mass at 15° and 60° is 34% and 19% of the intact rock mass without jointing,respectively,and the stress-strain curves of jointed rock mass show a striking multi-peak characteristic. When the joint plane angle is 15°,the failure mode of the sample is mainly compression splitting,the overall bearing capacity of the sample is greatly affected by the strength of the test block,and the reinforcement effect of the bolt is not significant. When the angle of joint surface is 60°,the failure mode of the sample is mainly shear failure,and the reinforcement effect of the bolt is obvious. At this time,in addition to the bond and shear resistance of the bolt body,the bolt also provides certain lateral support to the anchored sample by means of pallets mounted on both sides of the bolt,so as to maintain the overall bearing capacity of the structure to a certain extent. DIC method vividly and intuitively reproduced the whole process of fracture development and shear slip in the whole loading process of anchoring jointed rock mass. When the joint angle is 15°,the strain fields of E_xx and E_yy show a strain concentration area highly consistent with the cracks on the surface of the sample,but the strain concentration on both sides of the joint surface is not significant. However,when the joint angle increases to 60°,the strain fields of E_xx and E_yy are highly concentrated on both sides of the joint surface,presenting a tri-color shear zone. It proves that the angle of joint surface plays an important role in controlling the shear behavior of the sample,and the larger the angle,the more obvious the shear movement of the sample. The results of this study can provide a reference for the related research on the rockbolt reinforcement mechanism in jointed rock mass.