Landslide dams pose enormous risks to infrastructures and communities in mountainous areas near rivers, with potential dam breaches causing catastrophic secondary hazards. The morphology of a landslide dam, essential its stability, is highly influenced by formation conditions, including the type, material composition, valley shape. However, correlation between these factors poorly understood. A...

[1] Steep, rough channels occupy a large fraction of the total channel length in mountainous regions. Most sediment mobilized on hillslopes must pass through these streams before reaching lower-gradient channels. Steep channels have wide grain size distributions that are composed of finer, more mobile sediment and large, rarely mobile grains. The large grains can bear a significant portion of t...

Capillary barrier system (CBS) was developed as a slope protection method to prevent rainwater infiltration into the underlying soil based on principle of unsaturated mechanics by harnessing distinct difference in hydraulic properties fine-grained layer with those coarse-grained soils. The CBS is commonly designed and constructed using gravel material fine sand material. However, due scarcity n...