Abstract:
Panirendawa iron deposit consists of four isolated deposits namely A, B,
C and D. The deposit D has potentially high magnetite concentration according to
previous data. The main objective of the study is to carry out an electrical resistivity
survey to determine the overburden thickness of the deposit D using the SAS 1000
Terrameter. Vertical Electrical Sounding (VES) was carried out at ten different
locations around the deposit D. A single line parallel to strike was surveyed with six
points of equal depth to the bed rock and the other two lines (west to east) were
parallel to the dip as depth increases. The observed data were interpreted using the
IX1D Interpex software in to ID and 2D formats to identify the underground
layers/stratification with reference to the apparent resistivity values. The survey
was preceded with mean depth about 6.5m of surface layer having about lOOOQm
apparent resistivity overlying on a water baring surface with a mean thickness
about 35m having about lOQm apparent resistivity; also about 41m below, the bed
rock stood with an apparent resistivity about 44500m. According to present study,
the most possible mining method would be underground mining.
Citation:
Jayathilaka, B.R.P.M., Perera, M.S.R., Jayasekara, D.A.I.A., Liyanawaduge, C.Y., Abeysinghe, A.M.K.B., Premasiri, H.M.R., & Chaminda, S.P. (2010). In N. P. Ratnayake, A.M.K.B. Abeysinghe, H.M.R. Premasiri & S. Karunaratne (Eds.), Proceedings of the 5th Annual Conference on Earth Resources for National Development (pp. 13-16). Department of Earth Resources Engineering, University of Moratuwa.