<p>To investigate the macro–meso correlation characteristics of impact-induced accelerated creep during the shear time-dependent process of deep anchored jointed rock masses (AJRMs), a series of shear creep-impact tests were conducted under different combinations of joint roughness coefficient (<i>JRC</i>), normal stiffness (<i>K</i>_<i>n</i>), impact energy (<i>Q</i>), and number of impacts (<i>M</i>). Based on the superposition of mesoscopic stresses under combined stress paths, the damage variable induced by a single impact disturbance was reformulated into a creep-coupled impact damage variable considering the time-dependent creep effect and incorporated into the classical Nishihara model. Combined with CT scanning tests, the evolution characteristics of the local mesoscopic pore volume fraction around the anchor were quantitatively obtained, and a nonlinear shear creep-impact mechanical model coupling macro–meso parameters was established. The results indicate that high <i>Q</i> and <i>M</i> promote the evolution of shear creep deformation. Under different influencing factor combinations, the peak mesoscopic pore volume fraction associated with accelerated creep failure within twice the anchor-bolt diameter around the anchor is mainly distributed within 15–25%. Furthermore, two-stage parameter inversion and global sensitivity analysis clarified the parameter values and interaction effects under different factor combinations. The proposed model provides a theoretical basis for predicting the long-term deformation behavior of deep AJRMs under combined stress paths.</p>