<p>Dynamic disturbances such as blasting waves propagating through frozen rock masses can reactivate existing cracks whether ice-filled or not, resulting in localized damage and potential instability of the rock mass. This study systematically investigates the cumulative damage and failure mechanisms of frozen fractured rock with different ice-filled flaw geometries (e.g. angle, width and length) under cyclic impact disturbances using a Split Hopkinson Pressure Bar (SHPB) apparatus driven by a pendulum. The real-time micro-crack initiation, propagation, and ultimate failure in the frozen fractured rock subjected to multiple compressive impacts are captured using high-speed imaging techniques. The findings indicate that with an increase in the angle between the flaw plane and the vertical direction of the ice-filled flaw, the number of cyclic impacts that the frozen rock can withstand increases. Conversely, as the width and length of an ice-filled flaw increase, the resistance of frozen fractured rock to cyclic impacts decreases due to higher ice content. The dynamic elastic modulus and strength of frozen rock increase with the angle of an ice-filled flaw but decrease as the width and length of the flaw increase. The dissipated energy shows an upward trend with the number of impacts, and the first impact significantly controls the subsequent cumulative cracking behaviour and energy dissipation pattern. The results of this study provide valuable insights into the dynamic mechanical properties and fracture mechanisms of frozen fractured rock, contributing to the enhancement of safety and stability in geotechnical engineering structures in plateau cold regions.</p>