The creep characteristics and damage properties of interlayer shear belt of high abutment slopes affect the long-term stability of high dam projects.The shear creep mechanic characteristics of interlayer shear belt are studied based on the shear creep mechanic test,and the long-term shear strength parameters,accelerated creep properties and change rules of shear creep rate are analyzed.By analyzing the rules of creep damage evolution of interlayer shear belt,the damage degradation effects of mechanical para...