Banca de DEFESA: JONAS DA SILVA BEZERRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JONAS DA SILVA BEZERRA
DATE: 13/05/2022
TIME: 09:00
LOCAL: Pós-Graduação em Engenharia Civil on line
TITLE:

Analysis of the Erosiive Process of a Slope in the Neighborhood of Bom Jesus – Ilha de Itamaracá/PE

KEY WORDS:

Erosion on Slope; Soil dispersion; Granulometry; Mineralogy.

PAGES: 263
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Natural environments are constantly being transformed due to expansion and urbanization processes. The triggering of erosive processes depends on the interaction of several influential factors in the process, such as rainfall erosivity, soil erodibility, vegetation cover, relief and soil management. The monitoring, analysis and understanding of the mechanisms involved in erosion provide information on the environment, with regard to the possibility of interventions aimed at minimizing or mitigating erosion processes. This research aims to analyze the erosion process of a slope in the neighborhood of Bom Jesus, municipality of Itamaracá-PE. A laboratory geotechnical investigation campaign was carried out for the physical, chemical, mineralogical and mechanical characterization of the material. Assays were carried out to evaluate the dispersive and erodibility characteristics of the soil, including: Crumb test, Pinhole test and Modified Inderbitzen. Subsequently, the area was mapped, identifying each crack, classified according to its shape and the loss quantified by the Universal Soil Loss Equation (USLE). The analysis of the results allows us to observe from the physical characterization that the slope presents areas with high susceptibility to erosion in the sandy fraction. However, the mechanical behavior of the surface layer guarantees a certain control in the evolution of erosive processes. The slope does not show expansive or collapsible behavior, confirmed in chemical, mineralogical and compressibility tests. The samples show a small dispersion at point P-05. Regarding erodibility, modified Inderbitzen and USLE, they present values of 0.088 t/m², 0.31 t/m² and 0.92 t/m², respectively, demonstrating that the loss potential is associated with the evolutionary stage of the erosion. The method used is suitable for this type of study, as it was easy to apply and understand, and could be used on other slopes with the same erosion characteristics.

BANKING MEMBERS:
Interno - 2749584 - IGOR FERNANDES GOMES
Externo à Instituição - JOAQUIM TEODORO ROMAO DE OLIVEIRA - UNICAP
Externo à Instituição - JOSE RAMON BARROS CANTALICE - UFRPE
Externa à Instituição - KATIA VANESSA BICALHO - UFES
Externa à Instituição - STELA PAULINO FUCALE - UPE