In high-mountain contexts, rainfall can trigger various flow-like mass movements, from debris flows to hyperconcentrated flows and flash floods. Despite similar runout and velocity, propagation mechanisms are different. In such complex phenomena, also the existing protection structures play a fundamental role. In this paper, a multi-phase mathematical framework is adopted to simulate the propagation of a mixture of soil and wa...

Debris avalanches often originate along steep unsaturated slopes and have catastrophic consequences. However, their forecast and mitigation still pose relevant scientific challenges. This is also due to the variety of mechanisms observed near high sub-vertical bedrock outcrops, such as the impact loading of soil failed upslope the outcrop, the build-up of pore water pressures in the inception zone, and the bed entrainment alon...