| Popis: |
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 |
