摘要
The comparative study of electrical and hydrogeological soundings is being carried out on the site of the Jean Lorougnon Guédé University in Daloa, in central-western Côte d’Ivoire. The aim of this study is to determine the similarities in the weathering profile obtained by the hydrogeological surveys and the electrical surveys. The methodology is based on a comparative study of the characteristics of the weathering profile (number of layers, thickness of weathering and number of water inlets). The results show that the electrical sounding curves are of the KH type, giving 4 geological layers. The first layer corresponds to topsoil with a thickness of less than 1 m. The second corresponds to a thicker lateritic clay formation (20 m on average). The third layer is granitic arena, locally up to 30 m thick. Below this is the fractured granitic basement. The results also show that most of the results from the electrical boreholes are consistent with those from the boreholes. Differences exist and are essentially due to the shape of certain electrical sounding curves and to the driller’s assessment of the interfaces between the geological formations.
The comparative study of electrical and hydrogeological soundings is being carried out on the site of the Jean Lorougnon Guédé University in Daloa, in central-western Côte d’Ivoire. The aim of this study is to determine the similarities in the weathering profile obtained by the hydrogeological surveys and the electrical surveys. The methodology is based on a comparative study of the characteristics of the weathering profile (number of layers, thickness of weathering and number of water inlets). The results show that the electrical sounding curves are of the KH type, giving 4 geological layers. The first layer corresponds to topsoil with a thickness of less than 1 m. The second corresponds to a thicker lateritic clay formation (20 m on average). The third layer is granitic arena, locally up to 30 m thick. Below this is the fractured granitic basement. The results also show that most of the results from the electrical boreholes are consistent with those from the boreholes. Differences exist and are essentially due to the shape of certain electrical sounding curves and to the driller’s assessment of the interfaces between the geological formations.
