At present

there is a lack of research on the deformation and failure mechanism of earthquake-induced landslides with multiple slip surfaces.In this paper

the seventh landslide of0#landslide group along Yushu Airport Road is regarded as the test prototype

and the seismic wave collected in the"4·14"Yushu earthquake is selected as the basic dynamic load.The gradual failure characteristics of multiple slip surfaces under different load directions are studied using large-scale shaking table tests.The test results show that the amplification effect of the slope with multiple slip surfaces on the peak acceleration of seismic wave is more obvious for a higher elevation.Under the action of earthquake

the deformation and failure of the landslide with multiple slip surfaces gradually evolve from shallow to deep slip surfaces.Finally

the deformation and failure of the landslide is along the shallow parts of the sliding mass.The failure modes are different between earthquake-induced landslides with multiple slip surfaces and those with single slip surface.For the former

when there are localized sliding deformation in the slope

overall sliding does not necessarily emerge.Instead

the deformation of the landslide with multiple slip surfaces shows that the shallow sliding surfaces act as attachment

developing to the deeper sliding mass

which reflects the failure characteristics of continuous traction.The results of this experiment reveal the deformation and failure mechanism of landslides with multiple slip surfaces

which can provide useful reference for designing the treatment measures of such landslides.