Research on rock mass has always been the focus of discussion around the world,and the anisot-ropy of rock mass is one of the hot and difficult issues in research.Taking the Xicheng Railway as the engi-neering background,the sensitivity analysis of factors affecting the strength of laminated rock mass is car-ried out.In order to more objectively and realistically simulate the characteristics of the actual engineering rock mass,the triaxial compression experiment of laminated rock mass under different peripheral pressures was simulated by the discrete element software 3DEC,and the intrinsic strength relationship of the thin-layered anisotropic rock mass of carbonaceous millimetallic rock sandwiched with slate was investigated,and the comprehensively obtained rock strength parameters were obtained through the study of the strength parameters of the different rock mass,such as the angle of friction and the viscous cohesion,and the angle of friction and viscous cohesion of different structural surfaces.From the results,it can be seen that under different laminar inclination angles,the variation of the strength relationship of the rock mass roughly shows U-shape;the strength parameter is fitted by trigonometric function,and the re-sulting expression can reflect the inherent strength relationship of anisotropic rock mass in general.The re-sults of the study can provide reference for the secondary development of numerical simulation software.
关键词
软岩隧道/层状岩体/岩体各向异性/数值模拟/3DEC软件
Key words
Soft rock tunnel/Layered rock mass/Geotechnical anisotropy/Numerical simulation/3DEC software
维普
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