Abstract:The rock bolts in mining roadways are always subjected to dynamic loading,such as blasting,rock burst and seismic loading. There has been little research into the response of rock bolts to dynamic loading. In this paper,a 2D fast Lagrangian analysis of continua (FLAC) code is used to analyze the influence of seismic loading on bolts (end-anchored and fully grouted). With the numerical analysis,the variation of axial force of bolt with dynamic loading time is obtained. The installation angle of bolts affects the dynamic response of axial force. The max dynamic stress in the bolts induced by seismic loading should be below the yield strength of bolt shank (steel). End-anchored bolts are of more ductibility and can be well suited to dynamic loading than fully grouted bolts. As a result,end-anchored bolt should be used in mining roadways to undergo dynamic loading.