Seepage
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Detection of seepage paths in small earth dams using the self-potential method (SP)
Abstract The application of geoelectric methods, such as induced polarization (IP), the electrical resistivity and the self-potential (SP), presents an important indirect study methodology in several areas of geology, such as mining, geotechnics and environmental geology. The present study deals with the results of the application of the self-potential metho
REM, Int. Eng. J.. Publicado em: 2020-09
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2. Advances of Submarine Groundwater Discharge Studies in South America
Submarine groundwater discharge (SGD) is the hidden portion of water that discharges into the ocean across the ocean-land interface, and it is considered one of the hydrological cycle's major components. Two decades ago, SGD in South America was undocumented, and significant advances on this field has occurred since then. This paper presents the results of S
J. Braz. Chem. Soc.. Publicado em: 2018-05
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3. Geophysical investigation of earth dam using the electrical tomography resistivity technique
Abstract Dams are structures that dam rivers and streams for a variety of purposes. These structures often need to be sturdy to withstand the force of the impoundment and the high values of accumulated water load. The constant maintenance of these structures is essential, since a possible accident can lead to damage of catastrophic proportions. This research
REM, Int. Eng. J.. Publicado em: 2017-03
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4. Green's function based finite element formulations for isotropic seepage analysis with free surface
Abstract A solution procedure using the Green's function based finite element method (FEM) is presented for two-dimensional nonlinear steady-state seepage analysis with the presence of free surface in isotropic dams. In the present algorithm, an iteration strategy is designed to convert the over-specified free surface problem to a regular partial differentia
Lat. Am. j. solids struct.. Publicado em: 2015-10
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5. Hexavalent chromium reduction by aerobic heterotrophic bacteria indigenous to chromite mine overburden
Microbiological analysis of overburden samples collected from chromite mining areas of Orissa, India revealed that they are rich in microbial density as well as diversity and dominated by Gramnegative (58%) bacteria. The phenotypically distinguishable bacterial isolates (130) showed wide degree of tolerance to chromium (2-8 mM) when tested in peptone yeast e
Braz. J. Microbiol.. Publicado em: 2013
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6. CaracterizaÃÃo da cobertura superficial em encosta na Bacia do Rio das Pombas, Guarapuava â PR: bases para entendimento da gÃnese erosiva em tÃneis / Characterization of hillside superficial covering at the basin of Rio das Pombas, Guarapuava, Paranà state: basis for understading of tunnel erosion genesis
On the Guarapuava Plateau/Palmas, in a low slope hillside of superficial covering from basaltic origins, on the right bank of the Rio das Pombas, Paranà state, processes of tunnel erosion (pipes) were identified. These are subsuperficial erosion processes with typical features, such as subsidence of the tunnel roof and rebate structures, which tend to evolv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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7. Survey and study of graphite occurrences in the Aracoiába-Baturité graphite bearing District, CE / Levantamento e estudo das ocorrências de grafita do Distrito Grafitífero Aracoiába-Baturité, CE
The Aracoiába-Baturité Graphite-bearing District has graphitic gneiss deposits (disseminated ore) and vein (solid ore) with different genetic origins and their own physical characteristics and geological environments. The graphite gneiss ore is of sedimentary, syngenetic origin, with 1.5% to 8% C content, which is distributed along two long parallel belts,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2011
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8. Evaluation of a computer model to simulate water table response to subirrigation.
The objective of this work was to evaluate the water flow computer model, WATABLE, using experimental field observations on water table management plots from a site located near Hastings, FL, USA. The experimental field had scale drainage systems with provisions for subirrigation with buried microirrigation and conventional seepage irrigation systems. Potato
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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9. Proteção ao conhecimento: análise dos impactos positivos e negativos do vazamento de conhecimento em empresas no Brasil e no Reino Unido
O vazamento ou fuga de conhecimento (knowledge leakage ou knowledge seepage) se refere tanto à absorção como à transferência de conhecimento, que acontece na interação das empresas com o ambiente de trabalho. O artigo tem o objetivo de analisar as rotas de vazamento de conhecimento em empresas no Brasil e no Reino Unido, usando taxonomia apresentada n
Perspectivas em Ciência da Informação. Publicado em: 2008-12
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10. Water level behavior evaluation in upstream tailing dam. / Avaliação do comportamento do nível dágua em barragem de contenção de rejeito alteada a montante.
Among the main building methods of tailings dams, the upstream method is undoubtedly the most vulnerable to the occurrence of the failure originated by the power of seepage groundwater through the embankment. In a reservoir-dam system having low cohesion slimes, such as tailings dams, the power of seepage groundwater benefits the installation of internal ero
Publicado em: 2008
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11. UM ESTUDO EXPERIMENTAL UTILIZADO EM TOMOGRAFIA DE RAIO-X COM MECANISMOS ASSOCIADOS A PRODUÇÃO DE AREIA EM POÇOS DE PETRÓLEO / AN EXPERIMENTAL STUDY USED IN X-RAY TOMOGRAPHY WITH MECHANISMS ASSOCIATED THE SAND PRODUCTION IN OIL WEELS
Frequently, during the production stages of an oil well, simultaneous production of solid particles originating from the surrounding rock mass occur, a process called sand production. Stress concentrations around of the well may cause loss of cohesion between grains, thus creating a region of loose granular matter susceptible for drag bye seepage forces. The
Publicado em: 2007
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12. EFFECT OF THE COMPACTION METHOD ON THE PERMEABILITY OF AN ORGANIC COMPOUND-COLLUVIONAR SOIL MIXTURE / INFLUÊNCIA DO MÉTODO DE COMPACTAÇÃO NA PERMEABILIDADE DE UMA MISTURA COLÚVIO-COMPOSTO ORGÂNICO
The liner is one of the most important elements in a sanitary landfill project, since it works as a barrier capable to impede seepage of pollutant substances through the subsurface. This element is usually built with materials that have low permeability. The choice of the right material as well as the control and supervision of the constructive processes are
Publicado em: 2007