Study on the Influence of Rock Block Spatial Distribution on Deformation and Instability of Soil-Rock Mixture Slopes

Additionally, an analysis of the accumulation forms and surface deposition patterns of different types of landslides reveals a positive correlation between the travel distance, width, and area of landslides and rainfall duration. The final ranking of accumulation profiles from largest to smallest is as follows: upper layer > rear section > middle-lower layer > front-middle section. Finally, by studying the development patterns of plastic shear bands in soil-rock mixture slopes under various rock block spatial distributions, the underlying mechanisms of different instability modes are revealed.

For tension cracking and creep-type landslides, the development pattern primarily involves "detouring" and "encapsulation" of rock blocks. Erosion and gully formation-type landslides exhibit a development pattern of "detouring" rock blocks. In toe collapse and surface erosion-type landslides, when the plastic shear band develops into the middle-upper layer, the primary development pattern is "detouring" of rock blocks.

For channel collapse and surface erosion-type landslides, the development pattern includes "diversion" and "encapsulation" of rock blocks.