Geomats Used to Control Erosion on Reservoir Margins in Brazilian Hydroelectric Power Plants

Luz, Marta Pereira da; Aparicio-Ardila, M.A.; Santos, Ricardo D. dos; Valentin, Clever Aparecido; Schliewe, Marlon Silva; Coelho, Arnaldo Teixeira; Silva, Jefferson Lins da

doi:10.3390/w13111444

Cited by 2 publications

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References 36 publications

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“…In this context, geosynthetics with the functions of erosion-control products have become increasingly popular. The efficiency of different geosynthetic materials to restrain erosion has been carried out with laboratory and field evaluation [5,[8][9][10][11][12][13][14]. A laboratory performance evaluation was conducted using mechanical properties tests [7,15] and rainfall erosion tests [10,11].…”

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confidence: 99%

Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory

et al. 2023

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A Hydroelectric Power Plant (HPP) presents erosion problems on reservoir slopes and margins. Geomats are a biotechnical composite technology increasingly used to protect soils against erosion. Survivability or durability of geomats is essential for successful application. This work analyses the degradation of geomats exposed in the field for more than six years. These geomats were used as erosion-control treatment in a slope at HPP Simplício in Brazil. The degradation of the geomats in the laboratory was also analysed through exposure in a UV ageing chamber for 500 h and 1000 h. Degradation was quantitatively evaluated by testing the tensile strength of the geomat wires and thermal tests such as thermogravimetry (TG) and differential scanning calorimetry (DSC). The results showed that the geomat wires exposed in the field had a greater decrease in resistance compared to the samples exposed in the laboratory. In the samples collected in the field, it could be observed that the degradation of the virgin sample occurred earlier than in the exposed samples, contrary to what was observed in the TG tests carried out with the samples exposed in the laboratory. The DSC analysis showed that the samples had similar behaviours for the melting peaks. This evaluation of the wires of the geomats was presented as an alternative to analysing the tensile strengths of discontinuous geosynthetic materials such as the geomats.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory

et al. 2023

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Evaluation Method of Highway Plant Slope Based on Rough Set Theory and Analytic Hierarchy Process: A Case Study in Taihang Mountain, Hebei, China

2022

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The material foundation of soil and water conservation is built on the integrity of the highway plant slope. The proportional relevance of the components that affect slope quality was evaluated based on an environmental assessment and the actual characteristics of the highway slope. A system of four major indexes and twelve secondary indexes comprising plant traits, geometric factors, hydrological conditions, and vegetation conditions was developed to assess the stability of roadway plant slopes. The rough set theory approach and the analytic hierarchy process were used to solve the weights of the slope evaluation indexes. Based on a rough set and an analytic hierarchy process, an evaluation model is proposed. The model eliminates the inconsistency and uncertainty in the evaluated factors that are used to calculate the slope. The study was conducted in China. The highway plant slope of the Taihang Mountain highway in the Hebei province was evaluated using the assessment model after dividing the highway plant slope stability into four grades. According to the evaluation results, the model can be used as a reference highway plant slope stability study and provide technical help to prevent and lower slope safety accidents. The evaluation model can predict the slope quality of highway plants, demonstrating the efficacy and reliability of the evaluation methodology and approach.

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Geomats Used to Control Erosion on Reservoir Margins in Brazilian Hydroelectric Power Plants

Cited by 2 publications

References 36 publications

Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory

Mechanical and Thermoanalytical Study of Polypropylene Geomats Exposed in the Field and the Laboratory

Evaluation Method of Highway Plant Slope Based on Rough Set Theory and Analytic Hierarchy Process: A Case Study in Taihang Mountain, Hebei, China

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