Stability analysis of jointed slope based on smeared crack model

The constitutive relation of smeared crack model of the jointed rock mass is established based on increment expression form. Once a certain point of the material cracks, the cracks are evenly smeared in the material, the fracture direction is the main stress direction when this point achieves the tensile strength and cracks during the loading process. Meanwhile, by introducing the sheared retention coefficient, the softening action of the sheared rigidity on the cracked surface is defined, and the coefficient selection is discussed. On the basis of it, corresponding calculation procedure is compiled; the stability of jointed slope after excavation is analyzed. The calculation result indicates that the slope buckling form is controlled by the joint, and verifies the accuracy of this method.