Two transfer coefficient methods

based on over-loading method and strength reserve method

which are commonly applied to evaluate rock landslide stability

are validated at present through analyzing the results between limit equilibrium and finite element method. In this paper

the reliability of the two methods is validated through rock similar material modeling test on the background of Zhaoshuling landslide of Badong in the Three Gorges Reservoir area. Research result shows that the stability factor values calculated with these two methods are lower than that from modeling tests

and the value from over-loading method is preferable

of which the assumption of the essistence of tensile strength between blocks accords with the failure character of the model is given. However

the stability coefficient on the basis of the strength reserve method is far from that from testing. The transfer coefficient method based on the over-loading method is realialde when used in practical engineering.