International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Geopysical and Geotechnical Investigation of Cham Failed Dam Project, Ne Nigeria

Author Affiliations

  • 1Department of Geology Federal University of Technology, Yola, NIGERIA

Res. J. Recent Sci., Volume 1, Issue (2), Pages 1-18, February,2 (2012)


The geophysical and geotechnical techniques were applied in order to determine the immediate and remote causes of a failed dam project in Cham area NE Nigeria. Details of site investigation for the Cham dam are presented. Geologically, the dam-site rests on the geologically disturbed Yolde Formation. The course of the Cham River is structurally controlled by the underlying strike-slip and dip-slip faults. Ground geological investigation revealed the presence of joints, faults and associated slicken-sides and shear zones as well as desiccation cracks within the rock formations. Geophysical investigations confirms that these joints and fault zone extends more than 35 meters below the river beds. It also revealed the presence of shally clay, lateritic dark clay, fissile shale and friable siltstone to depths of more than 35 meters below the river bed. Laboratory studies of the engineering properties of the rocks disclosed a mean optimum moisture content of 14.6% at a mean maximum dry density of 1.80 mg/m, mean plasticity index value of 34.5% and a mean CBR value of 3% suggesting a highly weathered, plastic, friable and structurally weak rocks. These studies helped in explaining both the immediate and remote causes of the failed dam project.


  1. Blyth F.G.H. and De Freitas M.H., A Geology for engineers (7th Ed), Edward Arnold Pub. London, 1-325 (1978)
  2. Sirles P.C., NCHRP Synthesis 357 Use of geophysics for transportation projects, Transportation Research Board of the National Academies, Washington D.C. Available at onlinepubs/ nchrp/nchrp_syn_357.pdf(2006)
  3. Freeze R.A. and Cherry J.A., Groundwater Prentice-Hall, 604 (1979)
  4. El Boushi I.M. and Abdel Salam Y., The shallow groundwater of the Gezira Formation in Khartoum and northern Geziro Sudan notes and records, 53,154-163 (1982)
  5. Magboul A.B., Hydrogeology of the northern Gezira area Unpublished M.Sc Thesis University of Khartoum Sudan (1992)
  6. Obiefuna G.I. and Orazulike D.M., Hydrologic characteristics of the River Benue wetland in Semiarid Yola Area, NE Nigeria Water Resources-Journal of Nigerian Association of Hydrogeologists,20(2), 54-64 (2010)
  7. Clayton C.R.I. and Jukes A.W., A One point penetrometer liquid limit test, Geotechnique, 28, 469-472 (1978)
  8. BS 1377, Method of testing soil for civil engineering purposes. British Standard Institute, London (1990)
  9. AASHTO, Manual on subsurface investigations American Association of State Highways and Transportation Officials Washington D.C. (1988)
  10. Burmister, Advanced Soil mechanics (2nd Ed) J.Wiley and Sons New York (1997)