Banca de DEFESA: LYSANNE SOUZA DE MOURA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LYSANNE SOUZA DE MOURA
DATE: 30/08/2022
TIME: 10:00
LOCAL: Pos Graduação Engenharia Civil
TITLE:

Computational Modeling Applied to the Revitalization of Urban Rivers: A Case Study in a Tejipió River Hydrographic Sub-Basin-Recife/PE

KEY WORDS:

Revitalization of Urban Rivers. Urban Floods. GBI. HEC-HMS. HEC-RAS 2D. Computational Models. 

PAGES: 130
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

The disorderly urban occupations modify the patterns of floods, increasing the intensities and periodicity of occurrences. In this way, the floods highlights damage and economics loses. The basin of the Tejipió River has periodic floods (at least five times a year) with heavy rains. In the regions of Coqueiral and Sapo Nú, between the middle and upper Tejipió, events such as those on May 28, 2022 (~200mm in 24h) homeless around 2,000 families. The revitalization of urban rivers emerges as a concept to improve their environmental conditions, hydrological and hydraulic functions, comprising the revitalization of the river as an element of urban structuring. Revitalization in the watershed positive responses, such as the implementation of permeable areas, presented in green and blue infrastructure concepts. This research aimed to evaluate the hydrological and hydrodynamic responses from the computational modeling of revitalization scenarios in a stretch of the Tejipió-Recife/PE river basin. Four analysis scenarios were created: C0- Current Situation, C2 – Sustainable development (15% increase in permeable areas distributed in the basin) and C3 – Enhancement of green areas (permeable areas in PPA). Each scenario was submitted to four events, two theoretical (time return 10 and 25 years) and two reals (April/2021 and May/2021). The revitalization scenario whit better hydrological response it was the C2, compared to C0, with an 8% increase in Tc, reduction of 4% impervious areas and reduction in peak flow from 4.5% (TR10), 4.6% (TR25), 6.0% (April/2021) and 2.9% (May/2021). The 2D hydrodynamic model was applied to the C0 and C2 scenarios in the areas corresponding to the most affects communities in the region. In Coqueiral, hydrological improvements mitigated the floods, with a reduction of 4% in the affected areas and 2% a maximum depth (in April), increasing in the smaller depth areas and, consequently, as reducing deeper areas. In the calibration at Coqueiral, the NSE was 0.71 (good) and in the validation it was 0.50 (satisfactory). In Sapo Nú, the hydrodynamic modelling was representative, as a sinuosity of the river provoked an increase in flood depths, and the lack of knowledge of the flood marks prevented the calibration and validation of the model. Hydrological and hydrodynamic models are capable of simulating theoretical and real rainfall and subsidizing studies for hydraulic works and interventions that requalify and revitalize rivers and hydrographic basins. In addition, the role of public authorities and the population in the revitalization process is fundamental to the success of the process. 

BANKING MEMBERS:
Externo à Instituição - ADRIANO ROLIM DA PAZ - UFPB
Interno - 2130612 - JOSE ROBERTO GONCALVES DE AZEVEDO
Presidente - 2193972 - LEIDJANE MARIA MACIEL DE OLIVEIRA