Análise comparativa dos métodos de avaliação de estabilidade de talude a partir de dados coletados por veículos aéreos não tripulados (VANTS)

• DOI: https://doi.org/10.22533/at.ed.9231125180313

• Palavras-chave: Análise de estabilidade; Equilíbrio Limite, Veículo aéreo não tripulado; Elementos finitos.

• Keywords: Stability analysis; Limit equilibrium; Unmanned aerial vehicle; Finite elements.

• Abstract: This study presents a comparative analysis of slope stability based on topographic data collected by unmanned aerial vehicles (UAVs). Classical limit equilibrium methods, including Fellenius, Bishop, and Spencer, were evaluated alongside the finite element method (FEM). A case study conducted on a slope in Santa Catarina, Brazil, demonstrated that UAVs provide fast and accurate surveys, enabling the generation of high-quality digital terrain models and orthophotos, which are essential for slope instability assessments. The results revealed significant differences among the methods: Fellenius yielded more conservative safety factors, Bishop produced less restrictive values, and Spencer presented results closer to reality, while FEM also proved conservative but required higher computational resources. Overall, the integration of UAV-based surveys with specialized geotechnical software proved to be an effective approach, enhancing the reliability of analyses and contributing to safer, faster, and more cost-efficient engineering projects.