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Previous issue date: 2015-08-21 / A ?rea de estudo est? inserida na Bacia Hidrogr?fica do Rio Pirangi, litoral Oriental do Estado do Rio Grande do Norte, onde est? situada a cidade de Parnamirim. Abrange uma superf?cie de 370 Km?. A expans?o urbana do munic?pio de Parnamirim tem se desenvolvido de forma muito acelerada sem uma estrutura adequada, notadamente pela aus?ncia de rede esgotos, com riscos de contamina??o das ?guas subterr?neas podendo causar s?rios danos ? sa?de p?blica. As ?guas subterr?neas do Sistema Aqu?fero Barreiras na ?rea de interesse constituem a principal fonte de suprimento h?drico das popula??es urbanas e rurais. O uso da ?gua subterr?nea ? feito sem planejamento adequado e assim, importantes ?reas de recarga est?o sendo ocupadas. O presente estudo foi desenvolvido para a quantifica??o do uso e avalia??o das potencialidades das ?guas subterr?neas, tendo em vista o aumento da oferta de ?gua de boa qualidade e com menores riscos de serem afetadas por atividades contaminantes. Com estes objetivos, foram desenvolvidas as seguintes atividades: cadastro de 268 pontos d??gua; caracteriza??o da litologia, espessuras e estrutura hidrogeol?gica do aqu?fero Barreiras, com base na correla??o de perfis de po?os; e, avalia??o de par?metros hidrodin?micos do aqu?fero, a partir da interpreta??o de resultados de testes de bombeamento de po?os. Verificou-se que a espessura saturada cresce de oeste para leste em dire??o ao mar, com valores que variam de 15,47 a 56,5 m, com m?dia de 32,45 m. Os par?metros hidrodin?micos, obtidos com aplica??o do m?todo de Cooper-Jacob foram: transmissividade m?dia de 5,9x10-3 m?/s e a condutividade hidr?ulica m?dia de 2,82x10-4 m/s. A porosidade espec?fica ? de 15%, obtida com aplica??o da equa??o Biecinski. O mapa potenciom?trico mostra a dire??o principal do fluxo subterr?neo, de oeste para leste, e permite identificar as zonas de recarga correspondentes a regi?o dos tabuleiros do ?Barreiras?. Os vales dos rios referem-se ?s zonas de descarga do sistema aqu?fero. A Recarga foi estimada em 253 mm/ano, que corresponde ? taxa de infiltra??o de 16,4%. / The study area is within the Pirangi River Basin, eastern sector of Rio Grande do Norte state,
where is located of the Parnamirim city. It has an area of approximately 370 km?.
Urbanization has developed much fast without an appropriate infrastructure, mainly by the
lack of sewage systems, with risks of contamination of groundwater that may cause serious
damage to the health of the population. The Barreiras Aquifer System groundwater in the area
represents the main source of water supply for urban and rural populations. The use of
groundwater occurs without adequate planning and therefore, important recharge areas are
being occupied. This study was conducted to quantify the use and evaluation of the potential
of groundwater, in order to increase good water quality supply and lower risks of being
affected by polluting activities. With these objectives, the following activities were carried
out: 268 points of water have been registered; characterization of the lithological, thickness
and hydrogeological structure of the Barreiras aquifer, based on the correlation of well logs;
and evaluation of hydrodynamic parameters of the aquifer, from the interpretation of results
well pumping tests. It was found that the saturated thickness increases from west to east
towards the sea, with values ranging from 15,47-56,5 m with an average of 32,45 m. The
hydrodynamic parameters using Cooper-Jacob method were: average transmissivity of
5,9x10-3 m?/s and average hydraulic conductivity 2,82x10-4 m/s. The effective porosity is of
15%, obtained by applying Biecinski equation. The potentiometric map shows the main
direction of groundwater flow, from west to east, and identifies the recharge areas
corresponding to the region of the tablelands of the "Barreiras". The river valleys refer to the
discharge areas of the aquifer system. The Recharge was estimated at 253 mm/year, which
corresponds to the 16.4% rate of infiltration.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21061 |
| Date | 21 August 2015 |
| Creators | Alves, Rafaela da Silva |
| Contributors | 05154782453, Diniz Filho, Jos? Braz, 22219943453, Vasconcelos, Mickaelon Belchior, 84016736315, Melo, Jos? Geraldo de |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM GEODIN?MICA E GEOF?SICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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