Through laboratory model tests

the following discussions are performed based on macrostructure and microstructure: the vertical displacements varying with depth

the distribution of maximum principal strain and maximum shear strain of clay soil slopes

creep properties and crack functionary mechanism of clay soil slopes respectively under loading. The results show that

with the increase in loading

the values of creep increase microstructure of soil slopes. Creep of soil slopes can be considered as the process of damage

and process of energy dissipation of microstructure of soil slopes; and anisotropy of damage is made clear. The longer time of loading is

the larger vertical creep and damage accumulation of soil slopes is. At the top and inclined slope of soil slopes

damage becomes serious; and cracks appeared. The top of soil slopes

the values of vertical displacement are bigger than lateral displacement; on the contrary

at the bottom of soil slopes

the values of lateral displacement are larger than that of vertical displacement.