Conde Silva, J.; Serra, C.(Universidade de Aveiro, 2025-10)
A adição de elevados volumes de betão por forma aumentar a secção transversal de barragens de betão é um procedimento de reforço relativamente comum. Estas modificações de secções de barragens incluem a adição de betão ao ...
Conde Silva, J.; Serra, C.(Universidade de Aveiro, 2025-10)
A reabilitação de barragens de betão com recurso a argamassas e betões é uma prática amplamente adotada, impulsionada tanto por vantagens técnicas como económicas. Este artigo tem o objetivo de consolidar as informações ...
This work focuses on the dynamic monitoring behaviour of concrete dams, with a specific emphasis on the Baixo Sabor dam as a case study. The main objective of the dynamic monitoring is to continuously observe the dam’s ...
Braga Farinha, M. L.; Azevedo, N.; Oliveira, S.(The International Journal on Hydropower and Dams, 2025-10)
In concrete dam foundations, rock mass discontinuities and spatial variations in permeability give rise to complex seepage patterns, making monitoring and safety evaluation particularly challenging. An accurate safety ...
Braga Farinha, M. L.; Azevedo, N.; Oliveira, S.(ABMS e SPG (Associação Brasileira de Mecânica dos Solos e Sociedade Portuguesa de Geotecnia), 2025-09)
Most gravity dam failures occur due to sliding along the dam/foundation interface, rock
mass discontinuities, or rock mass layers of lower strength. The possibility of sliding of a
dam is usually evaluated based on ...
Dam or full-mixed concrete is produced with large aggregates which implies the use of large specimens, heavy laboratory equipment and non-standard embedding monitoring devices. The wet-screened concrete, obtained from the ...
Muralha, J.; Batista, A. L.; Lamas, L.; Mata, J.; Serra, C.(International Water Power and Dam Construction, 2025)
During the excavations for the Alto Tâmega dam, a rockslide occurred on the right bank slope immediately downstream from the dam insertion surface, involving a volume of about 23,000 m3, which led to the complete stop of ...
This paper summarises the most relevant aspects of the design and installation of the laboratory and in-situ setups used to determine the dam concrete deformability over time. These experimental setups aim at determining ...
Mata, J.; Serra, C.; Muralha, J.; Batista, A. L.; Lamas, L.(Taylor & Francis Group, 2025-05)
During the excavations stage of Alto Tâmega dam construction, a landslide occurred on the right bank slope, immediately downstream of the dam’s insertion surface, involving a rock mass volume of about 23,000 m3.
This paper ...
This study presents a novel adaptive warning threshold approach for dam safety monitoring, employing Kernel Density Estimation (KDE), a statistical method for estimating the probability density function of continuous random ...
This work focuses on the dynamic monitoring behaviour of concrete dams, with a specific emphasis on the Baixo Sabor dam as a case study. The main objective of the dynamic monitoring is to continuously observe the dam's ...
This paper describes the main characteristics of Daivões dam and the construction period, presents the most relevant monitoring data and the structural behaviour interpretation of Daivões dam during the reservoir’s first ...
During the excavations for the Alto Tâmega dam, a rockslide occurred on the right bank slope immediately downstream from the dam insertion surface, involving a volume of about 23,000 m3, which led to the complete stop of ...
The observed behaviour of dams in flood events is a fundamental activity in supporting decision-making regarding emergency management situations. Computer systems for monitoring the observed values are mostly designed to ...
Cunha, J.; Gomes, A.; Mata, J.; Batista, A. L.; Dias, I. M.; Salazar, F.(ICOLD, 2025-05)
This paper aims to analyze the structural effects of concrete swelling reactions in a large dam using Machine Learning (ML) techniques. The analysis is based on geodetic displacements data collected from the beginning of ...
Braga Farinha, M. L.; Azevedo, N.; Oliveira, S.(LNEC, 2025-04)
The ability to anticipate and avoid failures in concrete dams necessarily includes a detailed analysis
of the mechanical/hydraulic properties and monitoring data relating to the dam -foundation system,
an in-depth analysis ...
Braga Farinha, M. L.; Azevedo, N.; Oliveira, S.(MDPI, 2025-04)
For the safety assessment of concrete dam-foundation systems this study uses an explicit time-stepping small displacement algorithm, which simulates the hydromechanical interaction and considers the discrete representation ...
Alkali-silica reaction (ASR) and delayed ettringite formation (DEF) are the most common internal swelling reactions (ISR) in concrete dams. The swelling effects and concrete deterioration caused by ISR can be observed in ...
Dam surveillance activities are based on observing the structural behaviour and interpreting
the past behaviour supported by the knowledge of the main loads. For day-to-day activities, datadriven
models are usually adopted. ...
Traditional dam safety methods, based on visual inspections and manual monitoring,
have long been the standard for ensuring the stability and safety of dams. However, as
the scale and complexity of dam projects have ...