Earth, Energy & Environment
Received: 28 Apr 2018 , Published: 06 May 2018
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|1||Uzoegbu, M. U|
An assessment of the geotechnical and hydrogeological properties as agents in the formation and expansion of gullies in Ikwuano area is presented. Field geological study of the area revealed that it is covered by sedimentary rocks. The soils are lateritic and are the product of intensive weathering that occurs under tropical and subtropical climatic conditions resulting in accumulation of hydrated iron and aluminium oxides. Results of sieves analysis show that the soils at the gully sites have sorting values ranging between 0.42 and 2.3, coefficient of uniformity values ranging between 3.0 and 10, and the coefficient of curvature values ranging between 0.2 and 1.3. These indicate that the soils are fair to well sorted in places. The plasticity indices values ranging between 11.0 and 29 with mean value of about 20 indicate soils of moderate to high plasticity, slight dry strength and easily friable. Value of maximum dry density ranges between 1.83g/cm3 and 2.12g/cm3 at optimum moisture contents of between 7.4% and 11.3% reveals that the soils were generally loose. The hydraulic conductivity and transmissivity values as determined from statistical grain size method range between 3.8 ×10- 4cm/s to 6.4 × 102cm/s and 3.8 ×10-2cm2/s to 9.6 ×104cm2 respectively. These indicate moderate seepage fluxes and adverse pore pressures and are thus easily erodible. From the geotechnical analysis results, recommendations for erosion control such as aforestration, construction of drainages and concrete rip-raps were suggested.
Amos- Uhegbu, M.U. Igboekwe, G.U. Chukwu, K.O. Okengwu & K.T. Eke.(2013):Aquifer characteristics and Groundwater Quality Assessment in Ikwuano Area of Southeastern Nigeria. Journal of Scientific Research and Reports 3(2): 366-383, November 2013.
An-Bin, H., Jui-Ting, L., Yen-Te, H., Yun-Fang, C., Shyr-Yuan, C., 2012. Stability monitoring of rainfall-induced deep landslides through pore pressure profile measurement. Soils and Foundations 52 (4), 737–747.
Anon, O.H., 1979: Classification of rocks and soils for engineering geological mapping part 1. Rock and soil materials, bulletin Intern. Engineering Geology, No. 19:364-371.
Bell, F.G., 1983: Fundamentals of Engineering Geology, Butterworth Publishers London, p488-524.
Ebilah-Salmon and Partners, (1994). Investigation of the Existing Water Supply Facilities Within the University Complex, Geophysical Report and Recommendations for Reactivation and Future Exploitation for Potable Water Supply. Federal University of Agriculature, Umudike. pp25
Egboka, B.C.E and Nwankwo, G.I. 1985: The hydrogeological and geotechnical parameters as agents for the expansion of Agulu-Nanka gully Anambra State, Nigeria. Journal of African Earth Science vol 3 (4): 417-425
Egboka, B.C.E and Okpoko, E.I. 1984: Gully erosion in the Agulu-Nanka region of Anambra State, Nigeria. Challenges in African Hydrology and Water Resources (Proceedings of the Harare Symposium, July 1984) IAHS Publ. no 144.
Gheorghe, A., 1978: Processing and synthesis of Hydrogeological data, Abacus Press, Turn Bridge.
Grove, A. T 1951: Soil erosion and population problems in Southeast, Nigeria. Geog. Jour. 117:297-306.
Harleman, D.R.E., Mehborne, P.E. and Rumar, R.A., 1963: Dispersion, permeability, correlation In porous media. Journal of Hydraulic Division, American Society of Civil Engineers, 89:67-83.
Hazen, A., 1893: Some physical properties of sand and gravels. Mass state Board of Health, 24th Annual Report.
Igboekwe M.U., Okwueze E.E., & Okereke C.S. (2006). Delineation of natural aquifer zones from goelectric sounding in Kwa Ibo river watershed, south Eastern Nigeria.Journal for Engineering and Applied Science,1 (4), 410 –421.
Ijeh, B. I., &Udoinyang I.E. (2013). Assessment of the Groundwater Quality in Parts of Imo River Basin, Southeastern Nigeria: The Case of Imo Shale and Ameki Formations.Journal of Water Resource and Protection,.5, 715-722.
Mbonu, P.D.C., Ebeniro J.O., Ofoegbu C.O. and Ekine A.S, (1991).Geoelectric Sounding for the Determination of Aquifer Characteristics in Parts of Umuahia Area of Nigeria. Geophisics, 56, 284-291.
Obasi, P.N, Okoro, A.U, Igwe, E.O & Edene, E.N: (2015): Petrological Characteristics and Paleo-depositional Environment of the Sandstones of the Ameki Group (Eocene) in Bende and Isimkpu Areas, Southeastern Nigeria. Journal of Applied Geology and Geophysics (IOSR-JAGG) e-ISSN: 2321–0990, p-ISSN: 2321– 0982.Volume 3, Issue 5 Ver. I (Sep. - Oct. 2015), PP 09-15
Obiefuna, G.I. and Nur, A., 2003: Hydrogeological and geotechnical study of Bauchi and environs, Northeast Nigeria. Global Journal of Geological Sciences vol 2(1):187-198.
Obiefuna, G. I, Nur, A, Baba, A.U and Bassey, N.E., 1999 Geological and geotechnical assessment of selected gully sites Yola Area Northeast, Nigeria. Environmental hydrology Journal vol 7 (6):1-13 http://hydroweb.com/jeh1999/obiefuna.pdf
Offodile, M.E (1992): Approach to Groundwater study and Development in Nigeria. Mecon Services Limited PP 74-77.
Onyeagocha, A.C. (1980): Petrography and Depositional Environment of the Benin
Formation,Nig. J. Min. Geol; 1980;17(2):147-151.
Onyelowe, K. C. (2017). The menace of the Geo-Environmental hazard caused by gully erosion in Abia State, Nigeria. Environmental Technology & Innovation, 8, pp. 343-348.
Reijers TJA (1996). Selected Chapters on Geology-sedimentary Geology and Sequence Stratigraphy in Nigeria. SPDC Course Handbook (Field Guide) 121p.
Reyment, R.A. (1965), Aspects of the geology of Nigeria. Ibadan. Univ. Press, Ibadan, Nigeria, 145pp.
Short, K.C. and A.J. Stauble. 1967. Outline of the geology of Niger Delta. American Association of Petroleum Geology, Bull., volume Slpages 76 1-776.
Todd, D.K., 1995: Groundwater Hydrology. J Wiley and Sons, New York.
Turc, L., 1954: Methods of measuring Evapotranspiration Mc Graw-Hill Book Company Inc. New York.
Ukandu1 J. S., Udom G. J., Nwankwoala H. O. (2011). Hydrochemistry of Groundwater in Umuahia South Local Government Area, Abia State, Nigeria.British Journal of Applied Science & Technology, 1(4),141-151.
Uma, K.O; Egboka, B.C.E and Onuoha, K.M.1989: New statistical grain-size method of evaluating the hydraulic conductivity of sandy aquifers of Ajalli Sandstone Formation. Journal of Hydrology 108:343-366
Veisman, W.T., 1972: Introduction to hydrology. McMillan Pub. London.