Análise de estabilidade e proposta de solução de um talude no bairro Vila Isabel/Itajubá-MG

Abstract

The increasing incidence of landslides has generated significant socio-environmental impacts, resulting in damage to buildings and even loss of human lives. With climate change, rainfall is becoming increasingly intense and frequent, factors that exacerbate the occurrence of landslides. Therefore, it is of paramount importance to plan slope stabilization works, along with an efficient drainage system, to create accident risk management systems. With the aim of preventing accidents related to mass movement, this study proposes a technical solution for stabilizing a degraded slope, which poses a risk of collapse and threatens the population, located in the Vila Isabel neighborhood of Itajubá-MG city. To formulate the slope stabilization proposal, it was necessary to conduct a detailed topographic characterization of the site, followed by soil parameter determination. Subsequently, stability analyses were conducted using the Slope/W software. Several slope reinforcement proposals were evaluated, varying the proportions of cut slope inclination, and each modified profile was subjected to stability analysis. The objective was to find a solution that met the permissible safety factor recommended by NBR 11682 (ABNT, 2009), ensuring slope safety. After these detailed analyses, it was identified that the ideal profile for stabilization had a 1:2 ratio, achieving a safety factor of 1.40. Based on these results, a basic slope reinforcement project was developed, which included detailed earthworks, surface protection measures, and the design of an efficient drainage system. At the end of this study, the developed basic project served as a basis for requesting financial resources from the state government, through the Growth Acceleration Program (PAC). These resources will be allocated to develop an executive project aimed at recovering the degraded area, with the aim of preventing potential material and human losses in the vicinity of the slope.