Abstract：Abstract：Based on a case of crush rock slope K81 in Jinhua－Lishui－Wenzhou Highway，an analytical mechanical model was developed. According to field testing data，the compression deformation and subsidiary stresses of the crush rock slope under prestressed cables anchorage forces were analyzed by numerical simulation. The results are shown as follows：(1) it is suggested that light-tonnage cables should be employed in crush rock slope reinforcing engineering in consideration of low deformation modulus of the slope. The tensile force of 500–750 kN can be adopted；(2) the range interval of the cables should not be too small for the reduction of adjacent cable stretch-draw influence. On the other hand，the interval should not be too large to avoid subsidiary stresses looseness. The proper interval between cables in crush rock slope should be 4–6 m.
