Toppling rock slope is a special rock slope with bending deformation of rock mass to the free face.  With the unloading of rock mass during slope excavation,the stress redistribution of slope,the fracture surfaces of toppling rock is gradually connected,and the time-dependent deformation of slope continues to occurrence,which easily leads to slope deformation instability.  Relying on the example project of toppling rock slope along the highway in Miaowei reservoir area of Lancang River,  the characteristics and evolution process of high-level dislocation deformation of slope are analyzed,and the influencing factors,instability causes and deformation mechanism of high-level dislocation deformation of toppling rock slope are studied;The slope management follows the idea of“locking the slope groove,strengthening the waist and consolidating the foot",and adopts comprehensive management such as cutting slope and unloading,active prereinforcement protection,hanging net spraying anchor,  slag pile pressure slope and water interception and drainage measures to evaluate the stability of the slope before and after reinforcement.  The results show that the deformation of the toppling rock slope is inherited,and the high-level dislocation deformation is the continuation of the original toppling rock mass deformation.  The treatment of toppling rock mass deformation slope is mainly based on active pre-reinforced protection,and both cutting slope and unloading and anchorage protection are used to limit the stress relaxation and creep of toppling rock mass,which can provide reference for similar slope disease analysis and treatment.

highway in reservoir area, toppling rock slope, high-level dislocation body, fracture surface:active pre-reinforcement