The seismic stability of high-speed railway track embankment is of great importance for the safety and operational reliability of modern transportation networks, especially in regions subjected to seismic activity. The present study deals with a critical aspect of embankment performance and its behaviour under saturated pore pressure conditions during seismic events. By employing advanced geotechnical analysis and numerical simulations, this research provides a rigorous assessment of the gravity analysis, seismic response and stress analysis of railway track embankments under saturated pore pressure conditions. During seismic loading, the generation and dissipation of pore pressures are central to embankment stability. This research characterises the dynamics of pore pressure development within the embankment materials, focusing on the very complex interplay between excess pore water pressure and effective stress. By taking advantage of the advanced numerical simulations, the study thoroughly investigates the embankment’s response to seismic forces, with careful consideration of the influence of saturated pore pressures. This analysis offers valuable insights into potential deformations, settlements, stress and strain developments that occur during seismic events. The results of this study significantly advance our understanding of the complex interplay between seismic forces, saturated pore pressures and embankment responses. Such insights are vital for the development of engineering solutions aimed at ensuring the long-term safety and high performance of high-speed railway systems in regions susceptible to seismic activity.