Análise de processos erosivos superficiais por meio de ensaios de Inderbitzen

• Autor(a) principal: Stephan, Ana Maria
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/834
• topic: Erosão; Erodibilidade; Inderbitzen; Erosion; Erodibility, Inderbitzen; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::GEOTECNICA

The rapid and ill planned growth of cities has brought serious environmental problems in large urban centers. This thesis studies the soil loss by water erosion in three densely populated areas in the city of Juiz de Fora, MG, which has been presenting important erosional features. Measuring erosion is not easy, as rains and floods vary enormously, and one single extraordinary event can produce large losses of soil in a short time. To indirectly evaluate the erodibility of soils in the study, a program of laboratory testing was carried out, obtaining their geotechnical properties (consistency indices, particle size analysis, natural humidity content, density of solids, permeability and shear resistance).The erodibility of these soils was also directly evaluated through Inderbitzen tests, varying the geometry of the specimens. For the Inderbitzen equipment developed in this thesis, three ramps were fabricated with different holes for insertion of the specimens, in order to verify the effect of the shape and size of the samples in soil loss results. For this reason, during the testing program conducted, the flow and slope of the ramps was kept constant. From the results, one can conclude that changes in form and size of the hole in the ramp in the Inderbitzen equipment influenced the determination of erodibility of the soil. Furthermore, the soils of the areas studied showed no resistance to extensive erosion, which explains the large erosions that, over time, have been gradually increasing.