Abstract: To address vibration and surrounding rock deformation induced by deep underground roadway blasting excavation, a three-dimensional numerical simulation was conducted to systematically compare the effects of different blasting parameters and engineering vibration control measures. The results show that the delay-optimization scheme (Scheme B) reduced the average peak particle velocity (PPV) by 21.6% compared with the original design (Scheme A), with a 20.2% reduction in the near field. The roof settlement, sidewall convergence, and loose zone thickness decreased by 21.8%, 22.0%, and 19.8%, respectively, and the stability coefficient increased to 1.22. With the introduction of decoupled charging and air-decking (Scheme C), the reductions in these indicators were further increased to 28.5%, 27.9%, 28.3%, and 26.1%, respectively, with near-field PPV reduced to 16.2 cm·s⁻¹ and the stability coefficient increased to 1.23. Among the engineering measures, the pre-split blasting ring (E1) achieved the best vibration control, reducing the average PPV by 1.13 cm·s⁻¹; the grouting reinforcement ring (E4) showed the best structural strengthening effect, reducing the loose zone thickness by 0.154 m and increasing the stability coefficient to 1.23; the isolation blasthole ring (E3) exhibited superior vibration attenuation in the middle and far fields. The combined measures of E1+E4+E5 reduced the average PPV by 26.7%, roof settlement by 24.5%, and loose zone thickness by 0.172 m, and increased the stability coefficient to 1.25, achieving simultaneous optimization of vibration suppression, deformation control, and load-bearing capacity enhancement.