Influence factors analysis of layered slope stability considering variations in slope shape
To investigate the influence of slope shape,structural surface inclination,and structural surface rock parameters on the stability of layered slopes,FLAC3D software was used to calculate the safety coefficients of concave,straight and convex layered slopes under different structural surface inclinations by the strength reduction method.The influence of parameters such as structural surface density,cohesion,tensile strength,internal friction angle and Poisson's ratio on the safety coefficient of layered slopes were analyzed when the inclination angle of the structural surface was 150°.The results showed that:1)When the inclination angle of the structural surface is 0°～90°,the stability of layered slopes is greater than that of layered slopes when the inclination angle of the structural surface is 105°～165°.That is,the stability of Anti-dip layered slope is greater than consequent bedded layered slope.2)The stability of the layered slope decreases when the slope shape is convex,and the concave and straight shapes have less influence on the stability.3)When the inclination angle of the structural surface is 150°,the safety coefficient of layered slope increases with the increase of structural surface cohesion and internal friction angle,and decreases slowly with the increase of density,and the tensile strength and Poisson's ratio have less influence on it.
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