Abstract:The slope

where Wangjiaping landslide was located in Longmenshan Town

Pengzhou City

was selected as a typical example of binary structure anti-dip slope with excavation failure in this study

and indoor physical model tests were carried out on deformation and failure under seismic loading. The results showed that the deformation and failure of slope under seismic loading were exacerbated by excavation. As viewed from failure mode

the deformation and failure of anti-dip slope was characterized by both integral sliding of superficial overburden and dump – collapse of anti-dip rocks

consistent with the results of field surveys. The entire process of deformation and failure could be divided into the following phases: the initial stage of earthquake (a gradual connecting process between superficial overburden and bedrock interface)

superficial overburden sliding initiation stage

superficial overburden full sliding and bedrock traction - dumping stage. The deformation and failure process and laws of binary structure anti-dip slope were reproduced by the model test.