Analysis of seismic responses of bedding rock slope based on DEM
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Abstract:
Using the DEM, based on the bedding rock slope project behind the powerhouse of a hydro-power plant, we studied the seismic responses and anchor reinforcement effect of a bedding stereoplasm rock slope with multiple structural planes, and proposed a seismic reinforcement scheme for the slope. The research showed that the displacement of the unreinforced bedding stereoplasm slope under seismic action showed a stepped increase, and the rock blocks fell apart at the end of the earthquake. After reinforcement, the displacement of the slope diminished significantly, and the slope could remain stable in the earthquake. The shear force response of the anchor elements showed strong correlation with the relative displacement of their nearby structural planes, which means that the relative displacement between the rock planes around the anchor was the main stimulation factor of the anchor reinforcement effect in the earthquake. The relative displacement of the rock planes exposed on the slope surface at a lower elevation was larger; thus, the shear force of the corresponding anchor was larger. On these grounds, we put forward a more reasonable scheme for anchor arrangement.
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