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July 8, 2026International Journal of Geotechnical Engineering

Influence of hysteresis of bimodal soil-water characteristic curve on the stability of dual-porosity soil slope

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Authors

NBNura BelloASAlfrendo SatyanagaNGNurly Gofar

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Overview

Mathematical modeling assesses slope stability in dual-porosity soils, emphasizing hysteresis impact.

Key Points

  • This study aims to evaluate how hysteresis in the soil-water characteristic curve affects the stability of dual-porosity soil slopes during wetting.
  • Developed a mathematical model for bimodal permeability functions under drying and wetting conditions.
  • Conducted analyses using three scenarios: drying SWCC only, wetting SWCC only, and both SWCCs.
  • Tested drying and wetting SWCCs in the laboratory and linked shear strength to matric suction.
  • Ignoring hysteresis resulted in an overly conservative factor of safety, differing by up to 67%.
  • Using the drying SWCC alone underestimated stability compared to using both SWCCs.
  • Hysteresis significantly influences slope stability analyses and can lead to unsafe designs.

Cite This Study

Bello et al. (2026) studied this question.

synapsesocial.com/papers/6a4de8a7d2ea289ef62834dahttps://doi.org/10.1080/19386362.2026.2695618
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