NONLINEAR CATASTROPHY MODEL OF SLOPE INSTABILITY AND CHAOTIC DYNAMICS MECHANISM OF SLOPE EVOLUTION PROCESS
斜坡失稳的突变模型与混沌机制

The judgement formula for high and low speed landslide and a new theory of stiffness\|effectinstability are presented for the instability of planar\|sliding slope by the catastrophe theory.It is pointed out that the limit equilibrium stability analysis method of rigidity body has a lot of defects. The relationship between the action of outside environment and the response of slope system is complicatedly nonlinearaccording to the nonlinear dynamics model of slope evolution built.When the nonlinear action of slope itself is equivalent to the action of outside environment,the evolution process of slope is of chaos phenomenon andits road to chaos is realized with bifurcation of period doublings.