Abstarct: Before a specified location or area is excavated, resultant forces on the point is zero and the given point has stable equilibrium status, but while the underground space is excavated, the original stresses redistributed and the original stable equilibrium status of the surrounding rock is interrupted, therefor engineers designed of the tunnel support for maintenance and stability of underground spaces. The amount of loading come from the host ground itself is one of the major parameter in design of tunnel supports. Whatever the measurement is meticulously, calculation of stability analysis of tunnel lining is better done. But the problem is not easily and exactly solved due to uncertainties of the ground conditions, the redistribution of the in situ stresses related to the ground deformation before and after lining installation, and the differences in construction procedures. The determination of lining loads and stability analysis of underground spaces can be calculated using three methods: empirical, analytical and numerical methods. In this thesis, various methods in order to predicting of rock load are reviewed. Then value of rock load on the tunnel lining is predicted by using different methods for Bazi Deraz water conveyance tunnel. Results showed that the empirical and numerical approaches offer the highest and the lowest of rock load, respectively, and Numerical method with local factor of safety Provides better results than Numerical method with plastic zone.