Evaluation of sensitivity of the geotechnical parameters in the analysis of slope stability

Abraham Benarroch, María Alejandra Hernández, Rafael Manzanilla

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Landslides

ABSTRACT: A slope stability project can not be done efficiently without an accurate report of the physical and mechanical properties of the soils involved. If the designer is working with inaccurate results would not be a successful response to existing conditions. Attempts to analyze different results obtained by performing direct shear tests on submerged and natural condition samples given by laboratories and thus determine the degree of reliability offered by these results. Perform a geotechnical study conducted on a slope and the participation of three well-known soil laboratories, we are looking to obtain results to assess the impact of undrained shear strength of soil in the analysis of slope stability. With all of this, the purpose is to know the levels of uncertainty that has the geotechnical engineer when making any assessment or corrective to the stability of a soil mass. PRESENTACIONES TÉCNICAS Un proyecto de estabilidad de taludes no puede efectuarse de forma eficiente, sin que el proyectista tenga un reporte certero de las propiedades físicas y mecánicas de los suelos involucrados. Si el proyectista trabaja sobre resultados varían los resultados que se obtienen al realizar los ensayos de corte directo en condición sumergida y natural entre un estudio geotécnico realizado en un talud y la participación de tres reconocidos laboratorios de suelos, se busca obtener resultados que permitan evaluar el impacto de la resistencia al corte no drenado y el ángulo de fricción interna del suelo, en el análisis de estabilidad de taludes. Con todo esto, se pretenden conocer los niveles de incertidumbre que tiene el ingeniero geotécnico a la hora de realizar alguna evaluación o correctivo a la estabilidad de una masa de suelo.

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