Efeito da saturação do solo sobre a estabilidade de falésias

• Autor(a) principal: Gomes, Danilo de Alencar
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/40609
• topic: Estabilidade; Talude; Fator de Segurança; Falésias

This work deals with of the water effect on the stability of talus. A cliff in the south coast of the state of Rio Grande do Norte was studied. This cliff has 34 meters of height and average inclination of 49.5 degrees. The slope consists in layers of sandstones and argillites coming from Formação Barreiras and the geotechnical properties of the materials were obtained from previous works developed in the same area. Stability analyzes were performed using Geo5 v18 - Slope Stability software, developed by Fine Civil Engineering Software using equilibrium limit methods, such as Fellenius (1936), Bishop (1958) and Spencer (1967). Several situations of saturation were simulated on the surface layers of the slope, as well as a colluvium layer presents on the face of the cliff. The results showed that: Bishop Method was the least conservative method; The safety factor decreases as the saturated zone becomes thicker and the slope breaks when the thickness of the saturated zone reaches 4.0 meters. The analysis also indicated that, with the presence of colluvium layer, the safety fator decreases with the increase of the layer thickness and increases when the soil cohesion increases.