Composite sliding slope internal shear zone analysis method and system, terminal and medium

The invention discloses a composite sliding slope internal shear zone analysis method and system, a terminal and a medium, and relates to the technical field of rock mechanics analysis, and the main points of the technical scheme are that a composite sliding slope body is decomposed into a main sliding block and an anti-sliding block; in consideration of tangential stress and normal stress of an internal shear surface of the landslide mass, establishing a first mechanical equilibrium model of the main slide block and a second mechanical equilibrium model of the anti-slide block based on a rigid body limit equilibrium method; calculating a geometric parameter range of an internal shear surface of the composite sliding slope body in a limit equilibrium state by combining the first mechanical equilibrium model and the second mechanical equilibrium model; according to the first mechanical equilibrium model and the second mechanical equilibrium model, determining a correlation function between the geometric parame