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Successful Use of Geoelectrical Surveys in Area 3 of the Gol-e-Gohar Iron Ore Mine,Iran
Authors:Saeed Karimi Nasab  Azadeh Hojat  Abolghasem Kamkar-Rouhani  Hossein Akbari Javar  Saeed Maknooni
Affiliation:(1) Mining Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran;(2) Faculty of Mining and Geophysics, Shahrood University of Technology, Shahrood, Iran;(3) Gol-e-Gohar Iron Ore Mine, Sirjan, Iran
Abstract:Geoelectrical surveys were conducted in Area 3 of the Gol-e-Gohar iron ore mine to provide geological and hydrogeological information. Open pit mining is currently underway in the northern part of the Area, and underground mining operations are planned for the southern section. Groundwater has already been encountered in the open pit mine. Twenty five resistivity soundings were first performed in the mine area; then, induced polarization (IP) measurements were carried out to remove ambiguities between clay and water-bearing layers. To investigate fault zones as water conduits, combined resistivity profiling surveys were also carried out. These measurements provided a detailed structural map of the pit area. Resistivity and IP results have subsequently been confirmed by observations at three monitoring wells and the mine pit wall. Monitoring and piezometric wells will be drilled at locations suggested by the results of the geoelectrical surveys. Drainage galleries may be developed to dewater the open pit mine. However, another option being considered is to start the underground mining with the idea that it will initially simply serve as a dewatering mechanism.
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