Journal of Civil and Environmental Engineering

Influence of Soil Saturation and Seismic Load on Slope Behavior in Post-Landslide Jure Slope, Nepal

Abstract

Pradip Luitel*, RC Tiwari, P Makaju, P Panthi and S Lamsal

Landslides in Nepal pose a significant threat due to the country's active tectonics, delicate geology, rugged topography, and uncertain climate. The Jure landslide that occurred on August 2, 2014, has garnered particular attention due to the unprecedented loss of life and properties. This paper investigates the influence of soil saturation and seismic load on slope behavior in the post-landslide jure slope, Nepal utilizing RocScience phase-2, finite element analysis software. The study is performed by geomechanical stimulation of the slope model using shear strength reduction method, appropriate boundary conditions and Mohr column and Hoek-Brown failure criteria. The results show that higher saturation levels lead to reduced shear strength and increased displacement, while positive horizontal seismic loads decrease the critical strength reduction factor, increasing susceptibility of the slope to failure. Remedial measures developed accordingly can protect the affected region from future landslides during heavy rainfall and earthquakes. By enhancing our understanding of slope behavior, this study helps to improve disaster preparedness and resilience in similar regions facing natural hazards.