One of the important factors in weak rock masses that cause problems in tunneling is squeezing phenomenon. Stress induced stability problems in weak and particulate rocks are characterized by Squeezing. Squeezing is behavior that related with weak rock mass deformation and strength properties. This phenomenon is associated with large deformations and time dependent convergence during tunnel excavation. It takes place when a particular combination of induced stresses and material properties pushes some zones around the tunnel beyond the limiting shear stress at which creep starts. Deformation may terminate during construction or continue over a long period of time. Golawater conveyance tunnel is located in Isfahan province in the south-eastern edge of the Zayanderoud 's valley and Zayanderoud regulation dam. Thitunnel in the aim of transfer water into Kashan the amount of 2 cubic meters per second into is excavated. Thiroject is approximately 10.5 kilometers, including the main tunnel, access tunnel and underground pumping station. The excavation method in this tunnel with using a mechanized tunnel boring machine with telescopic shield and its support system is precast concrete lining (segment) Which is hexagonal with a negative slope excavation of the inlet to the outlet. Rock mass of the tunnel is mostly schist, mica schist, Slate, shale, sandstone, limestone and conglomerate. So there is squeezing potential possibility in these rocks. Due to in this project the effect of experimental methods, analytical and semi-analytical is evaluated. Then critical section of the squeezing potential presented and finally Numerical modeling of this phenomenon is done. In this paper, based on the results of experimental and analytical methods, phyllite rock masses were identified as the squeezing section. Then the phyllite –section’s creep parameters at the Burger model were obtained in the laboratory. Then phyllite section modeling using the software FLAC 3D and FLAC 2D with burgers model for 100 days (long-term) were performed. Our numerical modeling results show the large displacements due to very low quality of the rock mass in this section of the tunnel. The results of numerical modeling in the short- term, that TBM shield would be stuck in this section of tunnel. Also modeling this section in the long-term showed that instability and failure of the segmental support system. According to the local reports, segmental lining in this section of tunnel has failure, which is consistent with the results of analytical and numerical methods. At the end of this study, recommendations for support system in phyllite section are represented