APPLICATION OF VULNERABILITY DETERMINATION FOR FOUNDATION PARAMETERS: A CASE STUDY OF ISSELE- MKPITIME AREA OF DELTA STATE, NIGERIA
Journal: Pakistan Journal of Geology (PJG)
Author: Bawallah Musa Adesola, Ilugbo Stephen Olubusola, Adebo Babatunde A., Adedapo Johnson Olumide, Ofomola Merrious Oviri, Oladeji Johnson Femi, Raji Idowu, Chinyem Felix Iwebunor, Hadiza Mali Bukar, Bello Kingdom, Imolore Mark Ohis
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An integrated geophysical study has been carried out for the evaluation of geological factors that are responsible for foundation stability and vulnerability to failure in a typical sedimentary environment. This is a direct consequence of structural failure that was becoming a matter of almost daily occurrence, especially during the rainy season. In carrying out this study, seven electromagnetic profiles, magnetic as well as Lateral Horizontal Profiling (LRP) were carried out and complimented with Vertical Electrical Sounding (VES). The profiling allowed for the structural delineation of the areas into weak, fairly weak, fairly competent, competent, and very competent zones, while the Vertical Electrical Sounding (VES) delineated the subsurface layer parameters into topsoil, clay horizon, sand, and resistive sand. The vulnerability factors obtained from the statistical analysis were used to determine the stability and generate standardize threshold values. Therefore, since the load-bearing capacity of the foundation of this area is largely dependent on the second layer which is highly incompetent from this study, it then becomes imperative that the ingenuity of the construction/civil engineer must be brought into bearing for the sustainability and stability of any structure in this study area. All the methods engaged in this study exhibits an effective correlation and the area could be inferred/observed to be highly vulnerable to failure as a result of the inherent weak nature of the study location.