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This study aims to investigate soil properties and assess slope stability along the Mugling-Narayanghat highway corridor.

August 11, 2026Discover GeoscienceOpen Access

Site specific geotechnical investigation and slope stability assessment of the Mugling-Narayanghat highway corridor, central Nepal

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This study aims to investigate soil properties and assess slope stability along the Mugling-Narayanghat highway corridor.
Site-specific geotechnical investigation with soil sampling from five active landslide locations.
Laboratory analysis of soil properties including particle size distribution and shear strength parameters.
Analytical factor of safety calculation under dry and saturated conditions.
Friction angles from direct shear tests ranged from 26.1° to 29.1°, with cohesion values between 38.2 kPa and 102.5 kPa.
Saturation reduces the factor of safety (FOS) by approximately 30% to 36%, with critical sections dropping to FOS values of 0.89 to 0.96.
A pseudo-static assessment confirms that monsoon saturation and seismic loading are critical factors for slope failures.

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Randomized trial assesses slope stability in landslide-prone highways, indicating urgent need for mitigation measures.

Banjara et al. (2026) studied this question.

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