RELATIONSHIP BETWEEN SOIL PHYSICAL-MECHANICAL PARAMETERS AND EARTH DAM SLOPE STABILITY USING STOCHASTIC AND NUMERICAL MODELING

Relação entre parâmetros físico-mecânicos do solo e a estabilidade de taludes de barragens de terra com emprego de modelagem estocástica e numérica

Authors

DOI:

https://doi.org/10.5016/geociencias.v42i3.17683

Abstract

The main goal of this research is to obtain a mathematical relationship to estimate the initial safety factor in earthen dams, based on a linear regression model. To expand the initial sample that includes the physical-mechanical properties of existing soils in embankments of built earthen dams, it is necessary to apply the Monte Carlo method. Based on numerical modeling, the variation of the safety factor in a 30-meter-high dam is analyzed using the Morgenstern-Price method, considering steady water flow and including unsaturated soil in the analysis. A hybrid numerical model is carried out, which combines the Finite Element Method for the analysis of the filtration and the Limit Equilibrium Method to obtain the safety factor. Among the results of the numerical modeling and the proposed experimental design, it is observed that cohesion is the predominant mechanical variable in the behavior of slope stability of dams with homogeneous embankment. Abacuses are proposed to estimate the initial safety factor in the unsaturated state, fixing the specific weight, for various values ​​of cohesion and angle of internal friction; and a mathematical relationship is established to estimate the safety factor, which presents a coefficient of determination equal to 95%.

Author Biographies

Isaida FLORES BERENGUER, Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE).

Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE). Departamento de Estructuras. Calle 114 #11901 entre Ciclovía y Rotonda, La Habana, Cuba. Profesora Asistente, e-mail: isiflores92@gmail.com, Máster en Ingeniería Civil, teléfono móvil: (+53) 53100782. ORCID: https://orcid.org/0000‐0001‐8492‐0928 

Félix Michael HERNÁNDEZ LÓPEZ , Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE). Departamento de Estructuras.

Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE). Departamento de Estructuras. Calle 114 #11901 entre Ciclovía y Rotonda, La Habana, Cuba. Profesor Titular, e-mail: fmichaelhl@gmail.com. Doctor en Ciencias Técnicas. ORCID: https://orcid.org/0000-0002-8808-4637

Yoermes GONZÁLES HARAMBOURE, Instituto Nacional de Recursos Hidráulicos (INRH).

Instituto Nacional de Recursos Hidráulicos (INRH). Calle Humbolt #106 esquina P, La Habana, Cuba, Profesor Titular, e-mail: yoermes.gonzalez@hidro.gob.cu. Doctor en Ciencias Técnicas. ORCID: https://orcid.org/0000‐0001‐8613‐6264

Jenny GARCÍA TRISTÁ, Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE). Departamento de Estructuras.

Universidad Tecnológica de La Habana “José Antonio Echeverría” (CUJAE). Departamento de Estructuras. Calle 114 #11901 entre Ciclovía y Rotonda, La Habana, Cuba, Profesora Titular, e-mail: jenny@civil.cujae.edu.cu. Doctora en Ciencias Técnicas. ORCID: https://orcid.org/0000‐0003‐3072‐8011

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Published

2023-12-04

Issue

Vol. 42 No. 3 (2023)

Section

Artigos