Rainfall Slope Stability & Landslide Hazard Simulator

Pore Pressure (u)

0.0 kPa

Effective Normal (σ'n)

38.4 kPa

Failure Slip Depth

None

Time to Failure

> 24 hrs

Rainfall Intensity-Duration (I-D) Threshold

Mohr-Coulomb Shear Stress vs Normal Stress

Hydrological & Geotechnical Controls

Lithology Preset

Rain Intensity 65 mm/hr

Storm Duration 6.0 hrs

Slope Angle 34°

Soil Mantle Depth 2.8 m

Cohesion (c') 12.5 kPa

Friction Angle (φ') 32°

Initial Saturation 55%

Mitigation Structure

Mechanics: Infinite Slope limit equilibrium with Green-Ampt infiltration front. As rain percolates to the bedrock interface, transient perched pore-pressure ($u$) neutralizes effective normal stress ($\sigma'_n$), collapsing Mohr-Coulomb shear strength until $FS < 1.0$.