Abstract：The overlapping tunnels in a subway project are considered as the study background，and the influence of explosive vibration in overlapping tunnels on adjacent structure is studied during the subway project construction. The explosive vibration loadings are obtained by analyzing acceleration of explosive vibration. The initial stresses after excavation are calculated with stress relaxation method. The rational time step and damping of vibration analysis are defined by vibration modes and frequencies that are obtained with modal analysis. On the basis of Newmark step-by-step time integration method，the dynamic response of overlapping tunnels caused by the explosive vibration is analyzed. The stresses，displacements，and weak portions in the liner are determined under vibration loadings and static loadings. The vibration parameters and attenuation values in ground are achieved，and the results can be referred to tunnel design.
