Abstract: Through FLAC3D calculation software,the displacement,stress and safety factor of adjacent tunnel lining and rail during construction blasting in Xiazhuang copper mine are analyzed.The results show that after the blasting construction,the maximum horizontal displacement of the lining is 4.07 mm,the maximum horizontal convergence is 0.08 mm,the maximum settlement is 4.23 mm,the maximum lateral displacement of the rail is 3.46 mm,and the maximum settlement is 3.48 mm,which all meet the displacement control standard.The maximum principal stress,minimum principal stress and maximum shear stress of lining and rail increase slightly.The minimum safety factor of lining is 4.49,and the safety factor of lining after blasting construction meets the specification requirements.

Key words: Xiazhuang copper mine, tunnel engineering, blasting construction, displacement, stress, safety factor