Shaking Table Test Study on Dynamic Response of Bedding Rock Slope with Weak Rock

A shaking table model test was conducted to study the dynamic response and failure mechanism of a bedding rock slope with weak rock layer based on the “Xiaguiwa” landslide in the Jinsha River basin of Sichuan-Tibet. The influence of schist-like weak rock layer on bedding rock slope is considered. The test results show that the Peak Ground Acceleration (PGA) amplification coefficient varies rhythmically from the inside to the surface of the slope, and 0.3 g and 0.6 g are the slope appears cracking and instability. schist-like weak rock layer makes the seismic wave enhance obviously, but in the slope flexure position, the seismic wave near the weak rock layer is slightly weakened instead, and the maximum displacement often occurs above the weak rock layer. the “bucking” occurs at 1/4 of the slope height, and the fracture degree at the middle and lower part of the slope is greater than that at the middle and upper part, and the slope damage surface appears to be “concave at the top and convex at the bottom”. The damage process of the model slope is divided into four stages. The model test results reflect the influence of the weak rock layer on the seismic dynamic response and damage process of the bedding rock slope.