Influência do fluxo subterrâneo proveniente de bacia sedimentar na operação de reservatórios – Estudo de caso: barragem Jaburu I

Abstract

The geological characteristics of the contribution basin has significant influences over them, eventually occurring over all the operational period as a consequence of the subterranean flux, becoming evident in sedimentary basins and influencing the hydric balance directly. The objective of this paper is to evaluate the interference of the subterranean flux in the hydric reservation volume of a dam during the operational period. The hydric balance of the Jaburu I dam was analyzed to determine, based of real monitoring data, the influence of the sedimentary basin over dam operations. One result was the quantification of the subterranean flux over drought periods, evaluating hydraulic behavior for different scenarios, as well as its influence on feeding and depletion rates of the reservoir. Its behavior was also assessed over winter periods, showing the occurrence of high volumes of infiltration in underground rock due to its high hydric retention capacity.