Banca de DEFESA: NATALIA MILHOMEM BALIEIRO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : NATALIA MILHOMEM BALIEIRO
DATE: 31/10/2023
TIME: 09:00
LOCAL: Pós-Graduação Engenharia Civil
TITLE:

Geomechanical Classification of Rock Masses for Dam Implementation: Case Study of the Belém de São Francisco Dam

KEY WORDS:

Dam, geomechanical classification, rock mass and dam foundation

PAGES: 102
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Dam construction has existed since ancient times and plays a significant role in human development, being crucial for semi-arid regions that faces challenges related to frequent droughts. Geological- geotechnical studies are conditioning factors in the design of dams and they are heavily influenced by foundation conditions. In this context, this study aims to evaluate the geological and geotechnical conditions of the rock foundation for a dam to be built in Pernambuco, Brazil. It presents the geomechanical characterization and classification processes of rock masses and analyzes the influence of the foundation on the choice of the most appropriate technological solution for the project. This research also includes an individual classification of lithologies identified during the investigation of the rock mass and the dam's foundation line. This study relies on data from field geological-geotechnical investigations and laboratory tests, evaluating the mass based on its hydraulic conductivity and classifying it using Rock Quality Designation (RQD) values and Bieniawski's Rock Mass Rating (RMR). The results indicate that the rocks comprising the foundation's rock mass are predominantly soft rocks (R4) and very soft rocks (R5), showing significant fracturing and alteration. As per the RMR system, the rock mass is classified as having very poor quality. It lacks the geological-geotechnical and geomechanical characteristics required for a rigid structure dam foundation, making a gravity dam the preferred alternative.

COMMITTEE MEMBERS:
Externo à Instituição - JOAQUIM TEODORO ROMAO DE OLIVEIRA - UNICAP
Presidente - 3287631 - LEILA BRUNET DE SA BESERRA
Externo ao Programa - 1549099 - ROBSON RIBEIRO LIMA - null