Fonctionnement Hydrodynamique Des Aquiferes Discontinus De La Region D’abidjan-Agboville (Sud De La Cote D’ivoire)

Kouassi Ernest Ahoussi, Yao Blaise Koffi, Amani Michel Kouassi, Gbombélé Soro, Nagnin Soro and Jean Biemi

International Journal of Geography and Geology, 2013, vol. 2, issue 5, 52-69

Abstract: The region of Abidjan-Agboville, in spite of an abounding haste and the existence of a water-bearing system constituted by the two main hydrogeological units of the Côte d’Ivoire, knows numerous problems of supply with water. This study offers to know hydrodynamic functioning of water-bearing discontinuous of the region of Abidjan-Agboville. This study uses the method of Theis and Jacob for the counting of the hydraulic parameters of the water-bearing of plinth and statistical multivaried method. The flow rates of wells range from 0.20 to 18m3/h, with an average of 4.03m3/h. Average flows at high flow rates represent 47% of the drilling operation. Half of the recorded flows greater than 2.5m3/h and acceptable to the village water. The specific flow ratesarelow and vary from 0.02 to 3.26m3/h/m, among these, 91.85% are less than 1m3/h/m. The results of this study show that transmissivities of the water-bearing varies from 1.6.10-6 to 1.11.10-3m2/s, with an average of 1.12.10-4m2/s. The permeability of the water-bearing ranges from 2.25.10-8m/s to 9.29.10-5m/s. The slaty fields are the most productive than granite fields with stocks of permeability which wobble between 2.77.10-8m/s and 9.29.10-5m/s. The hydrodynamic parameters of the water-bearing are represented by the law of lognormale distribution. The most important debit sides of working are acquired from the thicknesses of impairment consisted of between 10 and 50m. In the area, the productiveness of aquifers is influenced by the transmissivity, permeability, the debit side of working and the specific debit side. The accessibility of groundwater is linked to bored complete depth and to thickness of the zone of impairment.

Keywords: Groundwater; Productivity; Rock and mineralization (search for similar items in EconPapers)
Date: 2013
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