Impact analysis of fault-bearing slope based on orthogonal and grey correlation analysis
In order to study the damage characteristics of fault spatial position on the open pit slope,taking the open pit mine as an example,FLAC 3D numerical simulation software was used for simulation calculation.The distance between the fault and the slope top surface,fault thickness and the distance between the fault surface and the slope free surface were selected.By changing the value of each factor,the damage characteristics of fault spatial position on slope under different factor values were obtained,and the sensitivity of three spatial position factors on slope stability was ranked by orthogonal experiment and gray correlation.The results showed that when the fault is located above the horizontal line of the slope bottom surface,the smaller the distance between the fault and the slope top surface,the more obvious the sliding damage of the slope.And when the fault is located below the horizontal line of the slope bottom surface,the sliding failure is not obvious.With the increase of the thickness of the fault,the collapse of the internal area of the fault fracture zone is more obvious,but the damage to the complete rock mass of the slope is not obvious.When the distance between the fault surface and the slop free surface is less than 50 m,the"bottom drum phenomenon"appears on the bottom of the slope.And when the distance between the fault surface and the slope free surface is more than 50 m,the slope has obvious uplift at the bottom of the slope at the end of the slope.
slope stabilityfault space positiongray correlation analysisorthogonal experimentsensitivity study
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