ABSTRACT
Anchorage parameter and its designing pattern are decided, and definite difference method FlAC3D is employed for numerical analysis to verify anchorage effect. The engineering practices show that orthogonal design method is practical optical design of anchorage engineering. In China, anchorage engineering is the most effective means of protecting rock slopes, while till the problem how to select anchorage parameters i.e. length, spacing and prestress value is not well solved yet. In order to reflect the reinforcement effect of the anchorage measure, the stability coefficients after slope protected is taken as the evaluating indicator. There are many factors to influence the anchorage effect, which not only have geometry parameters but also have physical mechanics parameters. Optical design on anchorage parameters of Shizi-bao rock slope with orthogonal design method indicates that in terms of effect influencing factors over slope stability line in the way, prestress value, spacing, length, slope stability coefficient being evaluation index.
