This study conducts numerical simulations to analyze the influence of the distance between roadway and fault fracture zone on the stability of excavation roadway surrounding rock during parallel roadway excavation with using the drilling and blasting method in the Julong Copper Mine.Numerical simulation models are established for different distances between roadway and fault fracture zone,and the variations in the displacement field,stress field,and plastic zone are analyzed.The numerical simulation results show that when the distance between roadway and fault fracture zone is 1 m and 4 m,the fault fracture zone has a significant impact on the stability of the surrounding rock of the roadway,with the maximum displacement values of the roadway side wall being 6.19 cm and 1.13 cm respectively.The maximum principal stress is concentrated in the left side surrounding rock of the roadway,with lesser stress in the right side surrounding rock.Horizontal stress is concentrated at the intersection of the surrounding rock and the fault fracture zone,and plastic deformation occurs within the fault fracture zone.When the distance between the roadway and the fault fracture zone is 7 m and 10 m,the influence of the fault fracture zone on the stability of the surrounding rock of the roadway is minor,with the maximum principal stress and horizontal stress approximately symmetrically distributed along the centerline of the influence,and no plastic deformation occurs within the fault fracture zone.