Resumen

FLORES BERENGUER, ISAÍDA et al. Effect of permeability on the factor of safety of earth dams under rainfall. Ing. Desarro. [online]. 2025, vol.43, n.1, pp.24-43.  Epub 03-Ene-2025. ISSN 0122-3461.  https://doi.org/10.14482/inde.43.01.748.528.

In this research, permeability and volumetric water content are related in order to evaluate their influence on the safety factor of 30-meter-high homogeneous earthen dams. For this, five analysis cases are considered, including clayey soils in the embankment, one for each case: a drainage prism and a waterproof base. Establishing three relationships between permeability and volumetric water content, based on the parameters of the soil studies and with the use of the Terzaghi and Schlichter equations, the fundamental conditions of the investigation are established. Five days of continuous rain are considered for three intensities, related to the saturated permeability of each soil. For this, a hybrid model of finite elements and limit equilibrium is used, through the GeoStudio (2018) program. The result allows establishing a relationship between failure time, the permeability estimation method, and the safety factor for the rain intensities, observing that, with the application of the Schlichter method, the safety factor decreases abruptly in the first 48 hours, while, for the Terzaghi method, the results show a greater similarity with those obtained from the parameters of the soil studies.

Palabras clave : earthen dams; permeability; rainfall intensity; safety factor; volumetric water content.

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