MODEL TEST OF SUPPORTING EFFECT OF RESILIENT ANCHOR CABLES ON SLOPE

Landslide is one of the most widespread and serious geological hazards in the world. Under the effect of rainfall and other factors,the landslide moves along the sliding zone,which causes the shear failure of reinforcement structures. However,the design of reinforcement structures has not been considered the dynamic evolution of the landslide and co-deformation between landslide and structures. So it is urgent to carry out the evolution mechanism of landslide with resilient anchor cables. Based on the theory of plastic deformation,a resilient anchor cables structure is proposed in this paper,and its mechanical model is established. The model test is designed by taking the Zhongfengchang landslide as the prototype. The axial force of the anchor cables,slope deformation and earth pressure are recorded during the deformation process. The results show that: (1)The soil pressure distribution and evolution of the reinforced model are completely different from the unreinforced model. Under reinforcement of resilient anchor cables,the resistance of the slope is increased by 20%. (2)In the model test,the axial force value of anchor cables changes periodically in the working stage,which is consistent with the theory. (3)Resilient anchor cable obviously decreased the displacement and deformation area of the slope.