Browsing by Author "Abdulfatai, I. A."

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Exploration of Groundwater within the Mariam Babangida Girls Science Secondary School Minna, NorthCentral Nigeria Using Schlumberger Vertical Electrical Sounding Techniques
(Journal of Science, Technology, Mathematics and Education (JOSTMED), 2012-08) Momoh, O. L.; Amadi, A. N.; Abdulfatai, I. A.; Omanayin, Y. A.; Onoduku, U. S.; Onah, M.
A Geoelectrical investigation adopting Schlumberger vertical electrical sounding (VES) have been carried out to explore for groundwater within the premises of Mariam Babangida Girls Science Secondary School, Bosso, Minna, Niger State. This is with a view of to resolve the problem of acute water shortages experienced by the staff and students of the institution. The area lies within the basement rock complex of North Central Nigeria with biotite granite and muscovite granite constituting the main lithological units. The survey was carried out using ABEM SAS 300C Terrameter along five (5) established traverses with 40 m maximum electrode separation. The VES data were analyzed and interpreted through curve matching and the use of Resist software to obtain the geoelectric parameters. These were used in constructing the 1D geoelectric sections and the isopach map. The geoelectric sections revealed the presence of four geo-electric layers namely the top soil, the weathered layer, the partly weathered/fractured bedrock and the resistive bedrock. The contoured depth to bedrock contour map reveals a significant linear feature delineated by the VES as fractures beneath T2V7, T2V8 and T3V9 and is filled with clayey substratum except T3V9 that are characterized by clayey sand materials. T3V9 is therefore recommended for drilling and groundwater development to a depth of about 30 m. however, the groundwater potential of the study area is generally low.
Integrated Geological and Geotechnical Properties of Subsoil for Shallow Foundation Design for M. I. Wushishi Housing Estate, Minna, Niger State, North-Central Nigeria
(Centre for Human Settlements and Urban Development Journal (CHSUDJ), Federal University of Technology, Minna, Nigeria, 2013-12) Omanayin, Y. A.; Abdullahi, I. N.; Amadi, A. N.; Momoh, O. L.; Abdulfatai, I. A.
A study of the geological and geotechnical properties of subsoil for shallow foundation design was carried out in the proposed site for the M. I. Wushishi Housing Estate in Minna, Niger State, North-Central Nigeria. The main aim of the research was to ascertain the lithological and structural characteristics of the study area in order to recommend the suitable shallow foundation design for the proposed building construction. The general geological mapping of the area revealed that the area is underlain by three lithologic units: Granite, Gneiss and Schist of Nigerian Basement Complex while the study area is predominantly underlain by Schist rock belonging to the Kushaka Formation. The principal joint direction in the area from rosette diagram is NW-SE. The area is generally low-lying and accessible through Eastern Bye-pass and Maitumbi road. The soil is heterogeneous when correlated laterally from trial pits. Both disturbed and undisturbed soil samples were collected and subjected to laboratory and sieve analysis. The liquid limit ranged from 12.00-37.00 with a mean value of 23.85 while the plastic limit varied from 7.27-30.73 with an average value of 17.17. The plasticity index varies from 1.79 to 15.13 with a mean value of 6.66 while the shrinkage potential ranged from low to medium. The maximum dry density ranged between 1.66-1.95 mg/m3 with the mean value of 1.81 mg/m3 while the optimum moisture content ranged from 8.70-21.37 with an average value of 15.16. The natural moisture content is in the order of 11.52-29.86 % with a mean value of 21.08 %. The particle size distribution curve shows that the area is sand dominated. Based on the field and laboratory results, shallow foundation (pad/strip) can be adopted for lightly loaded structures not exceeding an allowable bearing capacity of 150KN/m2 while deep/pile foundation are advocated for heavily loaded structures. Keywords: Foundation Design, Geological, Geotechnical, M. I. Wushishi Housing Estate, Minna, North-Central Nigeria
Investigation of Some Factors Responsible for Gully Erosion Activities along River Yashi, Minna, North-Central Nigeria
(Environmental Technology & Science Journal (ETSJ), 2016-06) Abdulfatai, I. A.; Okunlola, I. A.; Salihu, H. D.; Omanayin, Y. A.; Abubakar, A. E.
Investigation of some factors contributing to the propagation of gully erosion along River Yashi, Minna, North-Central Nigeria has been conducted. Field observations of anthropogenic factors and geochemical properties of soil along River Yashi were determined. The anthropogenic factors observed to contribute to the gully growth include soil excavation along the river bank and on the river bed, building on the flood plain and farm practices. Geotechnical field index properties of soil were determined followed by some laboratory index and performance tests. The outcome of the investigation indicated that; the natural moisture content varied from 8.49 to 18.21 % with an average of 12.93 %; the uncompacted bulk density (UBD) is between 0.98 to 1.23 kg/m3 with an average of 1.10kg/m3 and the compacted bulk density (CBD) is from 1.27 to 1.52kg/m3 with an average of 1.38kg/m3; the specific gravity varies through 2.15 to 2.68 and an average of 2.35; the sieve analysis result showed that coefficient of uniformity (Cu) is from 0 to 20.45 with an average of 7.63 while coefficient of curvature (Cc) is from 0 to 1.01 with an average of 0.64; the plasticity index extend from 0 to 5.63% while the average is 5.54%; the compaction result shows that the optimum moisture content (OMC) varies from 9.90 to 12.39% with an average of 11.39% while the maximum dry density (MDD) ranges from 2.14 to 2.42mg/m3 with an average of 2.2mg/m3; the triaxial shear test result shows that the angle of internal friction (AF) is from 6° to 11° with an average of 9° and the cohesion (C) is from 19 to 32kg/m2; the permeability ranges from 1.93 x 10-3 to 2.49 x 10-3cm/sec and the average is 2.14 x 10-3. The results of geotechnical tests show favourable soil condition for gully erosion growth. Slope stability, construction of rip-rap with weeping holes, cultural or vegetation method among others has been suggested as control measures.
Water Quality Assessment around Kataeregi Artisanal Gold Mining Site, North-Central Nigeria
(Nigerian Society of Mining Engineers (NSME), Book of Proceedings, 2014) Omanayin, Y. A.; Ogunbajo, M. I.; Amadi, A. N.; Abdulfatai, I. A.; Mamodu, A.
Hydrochemical assessment was conducted on streams, mine ponds and hand-dug wells around Kataeregi gold mining site, along Minna- Bida road, North-central Nigeria. This was done in order to evaluate the suitability of water in the area for both domestic and irrigational purposes. Fifteen quality parameters: Temperature, pH, TDS, EC, SO4, NO3, HCO3, Cl, Ca, Mg, Na, K, Cu, Fe, As and Pb were analyzed. The abundance of the major ions was in order of Ca2+ > Na+ > Mg2+ > K+ > Fe2+ for cations and HCO3- > SO42- > Cl- > NO3- > PO43- for anions. The water was observed to be earth-alkaline fresh water, which is an indication of water from shallow aquifer system. The results of the field and laboratory revealed that the concentration of most of the parameters were below the maximum permissible limits for a safe drinking water recommended by World Health Organization (WHO) and Nigerian Standard for Drinking Water Quality (NSDWQ) except for iron, sulphate and lead whose concentrations at some locations were slightly higher than their respective acceptable limits. The high content of iron and sulphate could be attributed to the oxidative weathering of pyrite associated with the gold mineralization in the area while high lead content observed in the area was due to the weathering and subsequent dissolution of galena, discarded by the artisanal miners during the exploration for gold.
Water Quality Investigation within the Neighbourhood of Kataeregi Artisanl Gold Mining Sites, North-Central Nigeria
(Journal of Information, Education, Science and Technology (JIEST), 2016-12) Omanayin, Y. A.; Ogunbajo, M. I.; Amadi, A. N.; Abdulfatai, I. A.; Mamodu, A.
Hydrochemical analysis was performed on water samples obtained from streams, mine ponds and hand-dug wells within the neighbourhood of Kataeregi gold mining site, located along Minna- Bida road in North-central Nigeria. The exercise is aimed at ascertaining the suitability of water from streams and hand-dug well for both domestic and irrigational purposes. The parameters analyzed for comprise of Temperature, Acidity – Alkalinity level (pH), Total Dissolved Solids (TDS), Electrical Conductivity (EC), and concentrations of SO42-, NO3-, HCO3-, Cl-, Ca2+, Mg2+, Na+, K+, Cu2+, Fe2+, As3+ and Pb2+. Geological field mapping show the area comprise of Migmatite-Gneiss Complex, Schist, Granite and Sandstone lithologies. The concentrations of Fe2+ and Pb2+ far exceed World Health Organization (WHO) and Nigerian Standard for Drinking Water Quality (NSDWQ) prescribed limits for irrigation, portability and other domestic purposes. The high content of iron could be attributed to the oxidative weathering of pyrite associated with the gold mineralization in the area while the high lead content observed in the area was due to the weathering and subsequent dissolution of galena, discarded by artisanal miners during the exploration for gold. All water bodies in the area belong to earth-alkaline fresh water, which is an indication of water from shallow aquifer system.