LARHYSS Journal
Volume 18, Numéro 1, Pages 181-207
2021-03-31
Cartography Of The Zones Favourable To The Implantation Of Drilling Center Of The Côte D’ivoire
Authors : Samake Yacouba . Assemian Assiè Emile . Soro Nambegué .
Abstract
ABSTRACT In the department of Tiébissou, most of the groundwater resources are contained in basement aquifers. In this region, 24% of the boreholes drilled are abandoned for reasons of drying up and negativity. The lack of knowledge of this aquifer is the main factor explaining this failure rate. This study aims to use remote sensing methods and GIS to locate the zones suitable for drilling to obtain good flow rates. Thus, the processing of the ASTER sensor DTM images allowed the extraction of the fracture network (1347 fractures) and the drainage network to determine the fracture and drainage density. Their integration in the drilling and climatic parameters, in multi-criteria analyses (GIS methods), allowed to determine the zones favorable to the implantation of drilling to obtain good flow rates. These are areas where groundwater is easily accessible, exploitable and capable of producing significant flows. These flows are scattered almost everywhere and especially a little more concentrated in the west. This will minimize the cost of drilling and will make it possible to supply drinking water to the large populations in these localities.
Keywords
Basement aquifer, groundwater, multi-criteria analysis, Remote sensing
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