Research on the Influence of Interconnectivity Structure Parameters to Stability of Stratified Rock Slope

Abstract

Based on the slope engineering of the expansion project from Laiwu to Linyi section of Beijing-Shanghai Expressway, this paper uses numerical simulation method and strength reduction theory to analyze the change law of stability and failure mode of rock slope under the change of structural plane inclination, cohesion and internal friction angle. The results show that: with the increase of structural plane inclination, the change law of the failure mode of the bedding layered slope is pull-bedding slip→shearing-slip→toppling failure; The change rule of the failure mode of the inverse-dip layered slope is from shearing-slip to toppling-slip; the stability of bedding layered slope and inverse-dip layered slope with steep structural plane inclination are increased with the growth of the structural plane cohesion, while the safety factors of the inverse-dip layered slope with a small structural plane inclination have no significant changes. The stability of bedding layered slope increases with the growth of the structural plane friction angle, while the inverse-dip layered slopes have obvious differences trend between steep and gentle structural plane inclination. The research can provide reference for similar projects.