Análise das Séries de Vazões Contínuas Obtidas em Tempo Real Através de Diferentes Técnicas com Aparelhos Acústicos Doppler Estáticos no Canal da Piracema da Itaipu Binacional: Canais quase Retangulares e Canais Trapezoidais

Gamaro, Paulo Everardo Muniz; Gomes, Benedito Martins; Maldonado, Luiz Henrique; Rodrigues, Manuela

doi:10.21168/rbrh.v18n1.p33-42

Cited by 3 publications

(3 citation statements)

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“…Other studies report the importance of evaluating measurement methods and techniques and flow and bathymetry [31][32][33][34][35][36][37][38][39] to define the most appropriate method for measuring and/or estimating surface runoff, as well as knowing the dynamics and availability of water resources, to provide tools that support the management of land use and conservation of available natural resources.…”

Section: Discussionmentioning

confidence: 99%

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Borella,

Paulista,

Alves

et al. 2023

Preprint

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The intensification of conflicts associated with the use of water in the transition region of the Cerrado and Amazon biomes caused by population and economic growth, combined with the interest in generating energy from hydroelectric plants, raise the need to quantify the surface water availability of rivers contributing with different drainage areas. The present study estimated and compared loco measurements of liquid flow (QL) and depth of rivers in the Teles Pires river basin by reference methods (MLN-7 hydrometric windlass and metal rod/winch) and by Acoustic Current Profiler by Doppler Effect (ADCP RiverRay), in addition, evaluated the total measurement time underestimation uncertainty by ADCP. Field measurements were carried out at monthly intervals between March 2020 and October 2021, seeking to represent the water seasonality and depth and QL variations in the cross-sections of the Caiabi 1 and 2, Celeste, Preto and Renato rivers. The evaluated rivers had a net flow between 3.48 and 60.78 m3 s-1 by the windlass and between 2.66 and 54.30 m3 s-1 by the ADCP, while the depths obtained were from 0.17 to 6.34 m by the rod/winch and from 0.65 to 6.20 m by the ADCP. The methods resulted in similar measurements of net flow and depth in each of the cross-sections, and the statistical performance of the linear regression model was satisfactory with a Willmott concordance index of 0.9977 and 0.9819 for estimates of QL and of the depth of the cross-sections, respectively. The ADCP accurately measured net discharge and depth in shallow (up to 6.5 m) cross-sections of Teles Pires River in relative to the reference method. Determining the total measurement time and pairs of transects to obtain accurate QL by ADCP depends on the hydraulic characteristics of the watercourses.

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Section: Discussionmentioning

confidence: 99%

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Borella,

Paulista,

Alves

et al. 2023

Preprint

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“…There are several methods for quantitative and qualitative water monitoring. Some of these methods are intrusive, as they depend on the direct contact of the equipment with water [6,15,16], and other methods are considered non-intrusive, such as remote sensing techniques [17,18], terrestrial images [19], and Internet of Things (IoT) technology [20][21][22][23], which do not require physical contact with the object of study (water). These non-intrusive methods have been gaining ground towards the Industrial Revolution 4.0 due to the diverse possibilities of applications in quantitative and qualitative water monitoring, soil management, and monitoring, which contribute to the adequate management and treatment of natural resources [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Borella,

Paulista,

Alves

et al. 2023

Water

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The intensification of conflicts associated with the use of water in the transition region of the Cerrado and Amazon biomes caused by population and economic growth, combined with the interest in generating energy from hydroelectric plants, raise the need to quantify the surface water availability of rivers contributing with different drainage areas. The present study estimated and compared in loco measurements of liquid flow (QL) and the depth of rivers in the Teles Pires river basin by reference methods (MLN-7 hydrometric windlass and metal rod/winch) and by Acoustic Current Profiler by Doppler Effect (ADCP RiverRay), in this last method the uncertainty estimate of the total measurement time by ADCP was evaluated. Field measurements were carried out at monthly intervals between March 2020 and October 2021, seeking to represent the water seasonality and depth and QL variations in the cross-sections of the Caiabi 1 and 2, Celeste, Preto and Renato rivers. The evaluated rivers had a net flow between 3.48 and 60.78 m3 s−1 by the windlass and between 2.66 and 54.30 m3 s−1 by the ADCP, while the depths obtained were from 0.17 to 6.34 m by the rod/winch and from 0.65 to 6.20 m by the ADCP. The methods resulted in similar measurements of net flow and depth in each of the cross-sections, and the statistical performance of the linear regression model was satisfactory with a Willmott concordance index of 0.9977 and 0.9819 for estimates of QL and of the depth of the cross-sections, respectively. The ADCP accurately measured the net discharge and depth in shallow (up to 6.5 m) cross-sections of the Teles Pires River relative to the reference method. Determining the total measurement time and pairs of transects to obtain accurate QL by ADCP depends on the hydraulic characteristics of the watercourses.

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“…Referência externa de velocidadeGamaro (2012) elucida que as velocidades calculadas pelo ADCP são relativas entre a água e o equipamento, porém, o equipamento também se encontra em movimento e, portanto, é necessário conhecer sua posição no tempo para se realizar as operações algébricas que calculem a velocidade da água em relação ao leito. Há duas maneiras de se realizar esta tarefa: (1) rastreamento de fundo e (2) utilização de um sistema de navegação por satélite.Ao se utilizar um ADCP, o equipamento transmite uma série de pulsos acústicos, sendo uma parte destes pulsos destinada a medir a velocidade do líquido em relação ao medidor e outra parte para medir a velocidade do medidor acústico em relação ao leito fluvial.…”

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Utilização de barco telecomandado na medição de vazão com medidor acústico Doppler nas bacias hidrográficas dos rios Tietê e Grande-SP

Iozzi Sperandelli

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Palavraschave: Medidor acústico Doppler (ADCP), barco telecomandado, medição de vazão, validação em campo, Hidrometria. A medição de vazões em rios é a base do monitoramento fluviométrico, indispensável para a gestão dos recursos hídricos cada vez mais demandados. O medidor acústico Doppler (ADCP) é o instrumento mais moderno para tal fim e, a partir da década de 2010 vem sendo utilizado sobre barcos telecomandados. O presente estudo visa preencher a lacuna existente na literatura sobre estudos de validação desta técnica recente. Entre 2015 e 2020, 112 medições foram realizadas em oito estações fluviométricas nas bacias hidrográficas dos Rios Tietê e Grande, estado de São Paulo. Resultados estatísticos indicaram que as medições em campo não diferiram dos valores de referência, validando o método de medição de vazão com ADCP e barco telecomandado. A nova técnica, por não necessitar de tripulação, permite a medição de cheias excepcionais sem trazer risco para a segurança dos hidrometristas, melhorando a precisão das curvaschave no seu tramo superior em substituição às atuais técnicas indiretas de extrapolação, contribuindo para a melhor gestão dos recursos hídricos.

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Análise das Séries de Vazões Contínuas Obtidas em Tempo Real Através de Diferentes Técnicas com Aparelhos Acústicos Doppler Estáticos no Canal da Piracema da Itaipu Binacional: Canais quase Retangulares e Canais Trapezoidais

Cited by 3 publications

References 4 publications

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Flow Measurement Methods in Small Tributaries of the Teles Pires River, Southern of the Amazon Hydrological Region

Utilização de barco telecomandado na medição de vazão com medidor acústico Doppler nas bacias hidrográficas dos rios Tietê e Grande-SP

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