Stability analysis of jointed rock slope based on particle flow code

摘要

By means of introducing strength reduction method and gravity increase method to particle flow code, the stability of the jointed rock slope is analyzed.In the analysis, rock is described by the particles and their contacts, and joints by the smooth joint model.Meanwhile, there is no longer need predefined constitutive relation or presupposing sliding surface.After strength reducing or increasing gravity, the fractures generate, propagate, and coalesce along the contacts with minimum tensile or minimum shear strength, forming the final sliding surface.Comparing with traditional limit equilibrium method, the result of particle flow code is more reliable in obtaining the safety factor and has more advantages in determining the sliding surface.It will provide a new approach for the stability analysis of jointed rock slope.