Modelagem de Caracterização Geotécnica do solo da barragem do assentamento olivencia localizada no município de QUIXADÁ/CE.

Abstract

Water is an essential element for the existence of life. However, there are several regions that suffer from the lack of this resource, going through long periods of drought, as is the case of the Northeast region of Brazil. Aiming at improving the drought-related situation, dam construction has become a common practice, especially in rural areas, principally small earth dam construction. However, these works often occur without a previous study of the soil that will compose the damming, analyzing whether it is suitable or not, and without checking the behavior of the damming in front of some important situations. Furthermore, government inspection and visitation of these structures are extremely limited. In view of this, the present work consists of determining the geotechnical properties of the soil of the small earth dam, located in the Settlement Olivencia community, located in Quixadá city/ CE, promoting the flow and the stability of the downstream slope analysis through SEEP / W and SLOPE / W software. Soil analysis was performed by deformed soil samples, taken along the busbar massif. With these samples, characterization, compaction, permeability and CD triaxial resistance tests were performed, so that, from them, stationary simulations were made considering the maximum dam operation regime and the soil classification. Using the SEEP / W software, the water table inside the massif and the flow paths were determined. However using the SLOPE / W, the stability study and determination of the critical safety factor of the downstream slope were performed. Results showed the influence of the lack of drainage elements in the arrangement of the flow paths, also showing that, for the analyzed condition, the dam has a satisfactory safety level.