Vertical electrical sounding applied to hydrogeologic and engineering investigations: A case study of Kaduna polytechnic staff quarters

Abdulahi, NK; Udensi, EE

doi:10.4314/njphy.v20i1.38169

Cited by 3 publications

(3 citation statements)

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“…According to [12], when the bedrock has relatively low resistivity (<750Ωm), this could indicate fracturing and high aquifer potentials strength. [13], observed that the resistivity of a basement is a function of their degree of weathering. The values of basement resistivity range from 1000 Ωm to 7500 Ωm.…”

Section: Resultsmentioning

confidence: 99%

Aquifer Vulnerability to Surface Contamination: A Case of the New Millennium City, Kaduna, Kaduna State Nigeria

Alao¹

2018

WJAP

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The study seeks to evaluate potential environmental impact on surface and groundwater as well as aquifer protective capacity to suggests possible solutions in some section of Kaduna Millennium City. A total of thirty Vertical Electrical Soundings (VES) were carried out using Schlumberger electrode configuration with current electrode spacing of a maximum of 200 m. The Interpreted data revealed the weak aquifer protective capacity zones which were found in some parts of northeast and central parts (VES stations A4, A5, A6, B4, C3 and C4) with its longitudinal conductance range from 0.114-0.194 Ω which represent 20% of the study area. Average/good aquifer protective capacity zones has longitudinal conductance ranging from 0.210-0.559 Ω. These zones covered twenty-four (24) VES stations which represent 80% of the study area and it is characterized with high thickness and low resistivity values of the weathered and fracture basement. Hence recommended for borehole siting. Similarly, the aquifer deep zones where the adjourning rocks are highly resistive (VES stations A1, A2, A3, B1, B2, D2, and E3) were also determined for siting waste and sewage disposals. However, the work also suggests that the urban associated development programs due to anthropogenic activities should be properly planned to avoid areas that are prone to contamination.

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Section: Resultsmentioning

confidence: 99%

Aquifer Vulnerability to Surface Contamination: A Case of the New Millennium City, Kaduna, Kaduna State Nigeria

Alao¹

2018

WJAP

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“…Ωm within the study area should be avoided for siting any heavy structure. According to [20], regions with high fresh basement resistivity (>6000) Ωm) are areas of high competence, hence in this work, the regions coloured red are competent areas for civil works. Section along profile 4 which has the thinnest sequence of loose overburden materials spread over the longest lateral distance conforms with the findings of [18][19][20] and is most favourable and suitable for siting high building with large accommodation capacity; this is because the fresh basement is at the shallowest depth here, thus requiring the least excavatory work.…”

Section: Geoelectric Section Along Profilementioning

confidence: 96%

Application of Electrical Resistivity in Building Foundation Study around Led School Area in Bishini, Northwestern Nigeria

Ojo

Talabi

Afolagboye

et al. 2017

JGEESI

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This study evaluated the structural competence of the subsurface geological materials around Led School Area in Bishini, NW Nigeria to delineate the area that is suitable for building development. Twenty Seven vertical electrical soundings (VES) points were occupied in the study area employing ABEM Terrameter SAS 300C with Schlumberger electrode configuration of maximum electrode separation AB/2=150 m. The field resistivity data were interpreted using Win RESIST software. The results from the 2-D interpretation of the VES data were used to prepare the geoelectric sections along four cross sections. The interpreted results showed that the geoelectric sections consist of Original Research Article

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“…Selection of site is extremely important in all sounding investigations, especially with the Schlumberger array due to its sensitivity to environmental conditions [14,37,38]. The basic focus of this research is to consider the existing Half Schlumberger technique and modify it to produce better results.…”

Section: Schlumberger Array Configurationsmentioning

confidence: 99%

Modification of the Traditional Half Schlumberger Arrays and its Efficiency for Subsurface Exploration

Abdullahi,

Nagoda,

Jaiyeoba

et al. 2023

Preprint

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Geophysical investigation of the earth’s subsurface is vital for engineering and environmental surveys. Application of the basic methods of geophysics to detect and study subsurface anomalies for engineering and environmental problems. This study modified the existing Half Schlumberger arrays after evaluating the efficiency of the existing Half Schlumberger array. The Modified Half Schlumberger (SMH) relatively produces a better result for a deeper geophysical investigation where there is a limited space than the existing Half Schlumberger (SH). The results of the investigated nine (9) VES stations were presented in tables and graphs, which shows that the two arrays are nearly the same (about 94% in similarity). The SMH array shows an interesting result. It was noted that the S_MH probes were deeper than the usual SF arrays with an average extension of about 2.4 m depth in terms of overburden thickness. In addition, the two arrays produce identical curve types, subsurface parameters, and soil depth section sequences across all the VES stations. The identical results confirmed the efficiency and reliability of the SMH array. Consequently, SMH can be adopted as a practicable alternative array to the traditional SH and the conventional Full Schlumberger (SF) array for any geophysical survey, where the usual SF array is applicable, most especially when deeper subsurface information is required and the available space is highly limited.

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Vertical electrical sounding applied to hydrogeologic and engineering investigations: A case study of Kaduna polytechnic staff quarters

Cited by 3 publications

References 0 publications

Aquifer Vulnerability to Surface Contamination: A Case of the New Millennium City, Kaduna, Kaduna State Nigeria

Aquifer Vulnerability to Surface Contamination: A Case of the New Millennium City, Kaduna, Kaduna State Nigeria

Application of Electrical Resistivity in Building Foundation Study around Led School Area in Bishini, Northwestern Nigeria

Modification of the Traditional Half Schlumberger Arrays and its Efficiency for Subsurface Exploration

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