Methodology for the determination of underground water velocity, direction and flow, by using radioactive tracers
Description
A basic route determining velocity and direction of ground water flow by using radioactive tracers is presented. Emphasis has been given to hydrology and nuclear energy concepts, to the construction of some specific equipment, to the calibration of radiation detectors and to the practical applications in borehole. 82Br and 51Cr have been chosen as tracers for the Darcy's velocity and direction determinations, respectively. From the obtained value of Darcy's velocity, the laminar flow was confirmed according to the admitted hypothesis. Comparisons of the Darcy's velocity values and flow direction have been made with values obtained using pumping tests and survey of the equipotential curves, where it can be concluded that they are of the same largeness and then, from a practical view, approximate. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Apresenta-se um roteiro basico para as determinacoes da velocidade, direcao e sentido do fluxo da agua subterranea, com utilizacao de tracadores radioativos, procurando-se dar enfase aos conceitos de hidrologia e de energia nuclear, a construcao de alguns equipamentos especificos, a calibracao dos detetores de radiacao em laboratorio e as aplicacoes praticas, em poco. Os radioisotopos 82Br e 51Cr foram escolhidos como tracadores para as determinacoes da velocidade, representada pela lei de Darcy e da direcao e sentido do fluxo, respectivamente. A partir do valor obtido para velocidade de Darcy, confirmou-se que o regime de escoamento do fluxo e laminar, de acordo com a hipotese admitida. Foram feitas comparacoes entre os valores da velocidade de Darcy, direcao e sentido do fluxo e os valores obtidos usando-se ensaios de bombeamento e levantamento de curvas equipotenciais. Concluiu-se que sao da mesma ordem de grandeza e, portanto, aproximados sob o ponto de vista pratico. (Autor)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Metodologia das determinacoes da velocidade, direcao e sentido do fluxo da agua subterranea, com utilizacao de tracadores radioativos
Publishing Information
- Imprint Pagination
- 144 p.
- Report number
- INIS-BR--263
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 16034036
- Subject category
- S58: GEOSCIENCES; S07: ISOTOPES AND RADIATION SOURCES;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- BROMINE 82; CALIBRATION; CHROMIUM 51; DARCY LAW; DIAGRAMS; GAMMA-GAMMA LOGGING; RADIOACTIVE TRACER LOGGING; SENSITIVITY; WATER
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BROMINE ISOTOPES; CHROMIUM ISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; HYDROGEN COMPOUNDS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPE APPLICATIONS; ISOTOPES; NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; RADIOACTIVITY LOGGING; RADIOISOTOPES; TRACER TECHNIQUES; WELL LOGGING