Estudo de viabilidade técnica-econômica de estabilização de talude na cidade de São Luís-MA.

Abstract

Landslides or slope slides can be caused by human action, by a natural or anthropic intervention, in turn, such landslides are results of slope instability, which can generate risks to the safety of the population, material and environmental assets. Thus, this paper aims to analyze the stability of a slope in the city of São Luís, MA, in order to propose two different types of containment as a solution to slope instability. The analyses were performed using the Generalized Limit Equilibrium (GLE) and Spencer methods. The study area is characterized by its outcropping geology, represented by Creataceous, Tertiary and Quaternary sediments. Therefore, from the data obtained it was possible to verify that the slope has a safety factor lower than that indicated in the NBR 11682/2009 and it was possible to propose a stapled soil and gabion wall system as a solution to instability. Taking into account the slope stability analysis and the technical and economic feasibility analysis performed, it was concluded that the FS found ranged from 1.551 to 1.619, confirming the slope stability after the proposed solution. However, after the solutions were quantified, the stapled soil was found to be the most technically and economically feasible solution.