Abstract：Based on a case of crush rock slope reinforced by prestressed cables in Jinhua—Lishui—Wenzhou Expressway，the prestressed anchorage mechanism in crush rock slope were systematically analyzed by FEM. First，according to the in-situ tested relational curves of cable tension forces and rock deformation，the physico-mechanical properties of rock mass were evaluated using numerical back-analysis method. Then，an analytic mechanical model was developed. Combined with in-situ tested data and laboratory research result，the stress dispersion manner of cable¢s prestress was analyzed；the distributions of slope stress and deformation varied with influence of rock mass properties，cable tension tonnage as well as different anchorage structures were discussed；the rule of slope stress and deformation response under prestressed anchorage forces was studied. As a result，the anchorage mechanism of prestressed cables in crush rock slope was discovered by the way of numerical simulation.
