Capacidade de suporte de cursos d’água urbanos sob a perspectiva técnica e epistemológica da engenharia
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Data
2015-03-20
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Universidade Federal de Goiás
Resumo
The study began with a technical approach to the development of a methodology to determine the
support capacity of urban streams exposed to erosion, based on the identification of the maximum
limit flow, without the channel overflowing, as determining factor of drag stress and of processes
of production, transport and deposition of sediments. During the first field work stage, we defined a
longitudinal section of the Samambaia Stream, located in the city of Goiânia, Goiás State Capital,
Brazil, to collect soil samples, perform infiltration tests and monitor the level of variation water,
with the HOBO U20 equipment. The laboratory stage consisted of testing of physical
characterization of soil and runoff simulation using the Inderbitzen apparatus, to determine
sediment production rate. The information obtained in these two phases, together with the data
coming from the bathymetric surveys of the cross sections and the topographic survey of margins
and of the adjacent areas of said channel have been used as input parameters for the simulation
performed with the use of the 1D model Hydrologic Engineering Center - River Analysis System
(HEC-RAS), version 4.1, in order to know the support capacity of the Samambaia stream. Then
was included in the research problem, an argument involving the social and environmental impacts
caused by the activities of Civil Engineering, performing an epistemological reflection,
extrapolating the focus exclusively technical, to the assimilation of new insights into the
interactions between the Civil Engineer and nature, looking for evidence of a possible change to a
paradigm that will contribute to the reduction of urban environmental vulnerability. Thus,
qualitative research was carried out through semi-structured interviews with sample composed by
by professionals working in the Engineering Civil and at the same time, teachers of federal
institutions of higher education, forming new professionals in this area. Data analysis was
referenced, especially in the works of Thomas Kuhn and also used the software Web Qualitative
Data Analysis (WebQDA), by favoring the structuring and the categorization process. The results
indicated that the current model adopted by the Civil Engineering is unable to simultaneously meet
the expectation of the population, in relation to better living conditions in urban areas, and respond
positively to social and environmental challenges. Up until today, conflicts in face of these
challenges, constitute indicators of the appearing of anomalies, however, there isn’t a setup for a
paradigmatic crisis.
Descrição
Palavras-chave
HEC-RAS , Inderbitzen , Paradigma , Processos erosivos , WebQDA. , HEC-RAS , Inderbitzen , Paradigm , Erosion
Citação
RIOS, F. P. Capacidade de suporte de cursos d’água urbanos sob a perspectiva técnica e epistemológica da engenharia. 2015. 105 f. Tese (Doutorado em Ciências Ambientais) - Universidade Federal de Goiás, Goiânia, 2015.