<p>As more and more mine land is used as engineering construction land, the dynamic load disturbance brought by building construction is an important factor that leads to the "activation" of the old goaf and accelerates the movement and deformation of the construction site. To ensure the safety and stability of the construction, based on the mechanistic analysis of historical goaf reactivation, this study establishes a partitioned prediction model for the caving zone in goaf areas. Subsequently, a dynamic deformation prediction model is developed by incorporating dynamic loading effects on reactivated surface movements. The proposed models are validated against field-measured residual deformation data from abandoned workings in the Xuzhou mining district, demonstrating the rationality and predictive validity of the modeling approach. Finally, the mobile deformation of the construction site of Pingdingshan Jianye Guangming House project is predicted, which has certain reference value for the project construction.</p>