Banca de DEFESA: ANDERSON MATHEUS DE SOUSA LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANDERSON MATHEUS DE SOUSA LIMA
DATE: 01/02/2023
TIME: 08:00
LOCAL: Pós-Graduação em Engenharia Civil
TITLE:

Analysis of Dam Safety Through Computational Modeling and the Application of a Safety Assessment Method

KEY WORDS:

Digital terrain model. Flood stain. Dam break.

PAGES: 132
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Dams are infrastructures that, in general, serve the multiple uses of water resources, in which their implementation requires appropriate planning, compliance with legal requirements and a specially designed safety limit plan. In this sense, the objectives of this research were based on verifying the effect of different resolutions of digital terrain models (SRTM, PE3D 5m and PE3D 30m) in the flood spots of the hypothetical rupture of the Serra dos Cavalos and Guilherme Azevedo dams. In addition, analyze the security level in these and in other 36 (thirty-six) buses. In this context, a methodological path was followed that consisted in determining the rupture hydrographs of the Serra dos Cavalos dam and Guilherme Azevedo dam, whose entrepreneur is the Departamento Nacional de Obras Contra a Seca – DNOCS, observing the propagation of the flood wave that occurred after of the ruptures of these dams, mapping the potentially floodable places and, thus, comparing the flood spots produced through the digital models of the terrain. Modeling was performed using the HEC-RAS software. The second analysis regarding dam safety was focused on the application of the Dam Safety Index - ISB, proposed by Zuffo's methodology (2005), in dams under the jurisdiction of DNOCS in the state of Pernambuco, made possible through documents of the Agreement between this body and the Federal University of Pernambuco – UFPE, in 2021. In this way, the research found that because the Serra dos Cavalos dam is made of earth, the rupture of the breach takes time to happen, in relation to the Guilherme Azevedo Dam, in which the rupture of the breach occurs more quickly, since the final structure is made of concrete. (existence of another dam downstream). One can see the dimension of the impact on life that the floodplain can help to prevent, the most refined coming from the digital land model PE3D 5m, which indicates the smaller number of homes affected, possibly because it is more accurate in its resolution. Finally, with the application of the ISB, it was verified that more than half of the evaluated dams exhibited “unsatisfactory condition” in relation to safety, while the rest presented “deficient condition”. This work, then, verified that in the case of study of dam rupture for the elaboration of the PAE, a spatial resolution of 5 m is suggested for MDT's acquired through aerial surveys with LiDAR laser. Also, there is a warning about the dams analyzed, since the evaluation placed them between unsatisfactory and deficient conditions.

COMMITTEE MEMBERS:
Presidente - 1688881 - ALFREDO RIBEIRO NETO
Externa ao Programa - 2984374 - MARIA ISABELA MARQUES DA CUNHA VIEIRA BELLO - nullExterno ao Programa - 1698142 - SAULO DE TARSO MARQUES BEZERRA - null