This work investigates the uplift mechanism induced by the frost-heaving phenomena on solar panel pile foundations, typically consisting of individual short driven steel piles, and explores possible mitigation interventions. This. With the depletion of global fossil energy and the rapid development of photovoltaic power, prestressed high-strength concrete (PHC) pipe piles are widely applied in photovoltaic projects due to their superior mechanical properties and ease of construction. However, prolonged periods with sub-zero temperatures may result in frost heave of the soil, which can in turn generate the uplift of deep. This study investigates the failure behavior of aluminum solar panel mounting structures subjected to uplift pressure, with particular focus on conditions not typically considered in conventional design, specifically, foundation defects. To clarify critical failure modes and evaluate potential. This study uses COMSOL Multiphysics software (version 6. 2) to conduct a simulation by establishing a multiphysical coupling model of the temperature field, oxygen concentration field, and seepage velocity field, simulating the dynamic evolution of spontaneous combustion in gangue mountains.