AUTOMATIC RUNOFF MONITORING ON EXPERIMENTAL PLOT INSTALLED IN CUT-SLOPE

Authors

  • Hugo Portocarrero Universidade do Estado do Rio de Janeiro (UERJ)
  • Aluísio Granato de Andrade Empresa Brasileira de Pesquisa Agropecuária - Solos (Embrapa Solos)
  • Tácio Mauro Pereira de Campos Pontifícia Universidade Católica do Rio de Janeiro (PUC-RIO)

DOI:

https://doi.org/10.12957/geouerj.2017.18523

Keywords:

Parshall type weir, ultrasonic level transmitter, runoff, automatic monitoring.

Abstract

doi: 10.12957/geouerj.2017.18523

Surface runoff monitoring on cut-slopes has been an issue addressed in several recent studies, but in experimental plots assessments have been limited to the storage of runoff in tanks and measurement of daily volumes in a laborious and time consuming process. In this study an automatic system for monitoring runoff on an experimental plot was developed using a Parshall type weir instrumented with an ultrasonic level transmitter. The runoff volume passes through the weir and then is stored on tanks where measurements by the conventional method were conducted. A plot of 11 m by 4 m was installed in a cut slope (60 m x 15 m and slope 66%). The maximum instantaneous flow rate during the study period was 8.35m³/h, in response to a 30.98mm/15min intensity rainfall. The results proved the efficiency of the system, and showed that runoff volume will change in a few minutes responding to changes in rainfall intensities. Deposition of sediments occurred in the system, indicating the need for periodic maintenance of the weir after a prolonged period of heavy rainfall, but there were no problems in measuring the levels during the monitored period.

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Author Biography

Hugo Portocarrero, Universidade do Estado do Rio de Janeiro (UERJ)

Possui graduação em Geografia pela UERJ (2001); mestrado em Geografia Física pela UFRJ (2004); doutorado em Engenharia Civil pela PUC-Rio com área de concentração em Geotecnia (2009), pós-doutorado em Engenharia Civil pela PUC-Rio (2011). Atualmente é professor adjunto do Departamento de Geografia Física da UERJ e coordenador do Laboratório de Geotecnia Ambiental LGA/UERJ, desenvolvendo atividades de ensino, pesquisa e extensão. Atuou anteriormente na elaboração de diagnósticos do estado de degradação das terras, projetos de recuperação de áreas degradadas, relatórios técnicos, planos de monitoramento ambiental, elaboração de EIA/RIMA, caracterização pedológica, avaliação do estado de conservação das terras.

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Published

2017-06-11

How to Cite

PORTOCARRERO, Hugo; DE ANDRADE, Aluísio Granato; DE CAMPOS, Tácio Mauro Pereira. AUTOMATIC RUNOFF MONITORING ON EXPERIMENTAL PLOT INSTALLED IN CUT-SLOPE. Geo UERJ, Rio de Janeiro, n. 30, p. 277–304, 2017. DOI: 10.12957/geouerj.2017.18523. Disponível em: https://www.e-publicacoes.uerj.br/geouerj/article/view/18523. Acesso em: 20 apr. 2026.

Issue

No. 30 (2017): Jan/Jun - IUPEA 2016 Lisboa

Section

Articles

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