bachelorThesis
Movimento gravitacional de massa em latossolo no município de Arapongas no norte do Paraná: causas e repercussões ambientais
Fecha
2017-08-11Registro en:
DIONISIO, Vitor Hugo Astun. Movimento gravitacional de massa em latossolo no município de Arapongas no norte do Paraná: causas e repercussões ambientais. 2017. 90 f. Trabalho de Conclusão de Curso (Graduação) - Universidade Tecnológica Federal do Paraná, Londrina, 2017.
Autor
Dionisio, Vitor Hugo Astun
Resumen
Geological-geotechnical studies that are designed to evaluate the potential for occurrence and degradation of natural hazardous events have gained importance due to the various recurrent erosive processes in many regions causing environmental impacts and financial losses, such as the northern state of Paraná. In the city of Arapongas - PR was verified in January 2016, an erosive process of mass movement classified as mud race, having a long radius of reach and high destructive power, promoting great environmental impact to the local ecosystem. In addition to this, in the same period, records of numerous similar cases were reported throughout the northern region of Paraná. Thus, the main objective of the work was to carry out an environmental diagnosis of the causes and environmental repercussions of this mass gravitational movement, in order to raise the possible environmental factors that trigger the process by promoting proposals for the environmental recovery of the area. Physical soil characterization, mapping, pluviometric data analysis and field research were performed. It was verified that the erosive process was triggered due to a sum of factors, such as: soil classified as red latosol, sensitive to flood and considerable collapsible; Topography of the medium sloping area, with undulations along the stretch; High rainfall index between 2015 and 2016 under the influence of the El Niño climate phenomenon, which recorded 223.6 mm in 24 hours on the day of the erosive process occurrence, surpassing the historical average for the entire month of January. After these findings, recovery actions were proposed, such as replacement of the soil with stabilization of the slopes and adaptation of the drainage area, considering that the current state is subject to the occurrence of new erosive processes and to increase the environmental degradation. With the numerous cases recorded throughout the region and the importance of the subject addressed due to its destructive power, we highlight the search for new geological-geotechnical studies of mass movements in the region in order to promote preventive and conservationist actions.