IAHS2022-84
https://doi.org/10.5194/iahs2022-84
IAHS-AISH Scientific Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Rôle hydrogéologique des linéaments dans l’optimisation de la productivité des forages en milieu de socle : cas de la région du Bounkani (Nord-est de la Côte d’Ivoire)

Rock Armand Michel Bouadou1, Kouamé Auguste Kouassi1, Théophile Gnagne1, and Adama Coulibaly2
Rock Armand Michel Bouadou et al.
  • 1Université Nangui Abrogoua, UFR Sciences et Gestion de l'Environnement, Laboratoire Géosciences et Environnement, Abidjan, Côte d'Ivoire (rockarmand22@gmail.com)
  • 2Université Félix Houphouët-Boigny, Département des Sciences et Technologies de l'eau et de l'Ingénierie Environnementale, UFR des Sciences de la Terre et des Ressources Minérales, Abidjan, Côte d'Ivoire

Abstract

The National Development Plan (PND) 2021-2025 reveals that access to drinking water remains the first priority of the population in Bounkani, a locality located in the middle of the ploughshare in the North-East of Ivory Coast. However, the mobilisation of this resource in the area is experiencing productivity difficulties. Thus, our study consists in demonstrating the influence of lineaments in the productivity of water wells in Bounkani in order to optimize their implementation. By relating the parameters of the lineaments to those of the boreholes, we obtained significant results between them. Statistical analysis of the lineament and borehole parameter data showed a significant correlation using the SOM (Self Organizing Map) method. Thus, the lineament density in relation to the borehole parameters yielded threshold values of 30 m, 40 m and 1.29.10-4 m2/s for weathering thickness, depth of drilled basement and transmissivity respectively. The inflow depths between 17 and 40 m represent the inflow depth range with good lineament density. The flow rate and specific flow rate gave thresholds of 6.2 m3/h and 0.69 m3/h/m respectively, which resulted in minimum lineament densities of 0.48 km/km2 for a cumulative length of 11.90 km for flow rate and 0.49 km/km2 for a cumulative length of 12.15 km for specific flow rate.

Keywords : Lineament, productivity, drilling, Bounkani region, Ivory Coastent, productivité, fourrage, région du Bounkani, Côte d'Ivoire

How to cite: Bouadou, R. A. M., Kouassi, K. A., Gnagne, T., and Coulibaly, A.: Rôle hydrogéologique des linéaments dans l’optimisation de la productivité des forages en milieu de socle : cas de la région du Bounkani (Nord-est de la Côte d’Ivoire), IAHS-AISH Scientific Assembly 2022, Montpellier, France, 29 May–3 Jun 2022, IAHS2022-84, https://doi.org/10.5194/iahs2022-84, 2022.