Abstract：Based on the detailed analysis of the geotechnical investigation report of an open-cut metro station， the numerical simulation has been performed for the metro station using the finite difference program FLAC3D considering the main structures of the metro station，the initial ground stress，the construction process and the physical and mechanical parameters of the stratum. The results show that the enclosure structure and the internal bracing can stably support the surrounding rock. Several suggestions for the construction have been proposed；and the stable values have been predicted for the monitored displacements of the enclosure structure during the construction process. Meanwhile，by monitoring the displacements of the metro station，the stable displacements of eight monitoring points on the enclosure structure have been obtained. Comparing the values and the change tendency of the displacements，it shows that the stable monitoring values of enclosure structure are smaller than the predicted ones by the numerical simulation，but the change tendency of the deformation is consistent. Therefore，the validity of the FLAC3D program is proven in the aspects of estimating the stabilization of the surrounding rock and predicting the displacement in the foundation pit；and an effective and dependable method of the displacement prediction for the similar follow-up projects has been provided.
