Geo-electrical models based on data gained from the coal mine “Suvodol”

Manevski, Vladimir and Delipetrov, Todor and Doneva, Blagica and Delipetrev, Marjan and Dimov, Gorgi (2013) Geo-electrical models based on data gained from the coal mine “Suvodol”. 5th Jubilee Balkan Mining Congress. pp. 279-283. ISSN 978-608-65530-0-5

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Geophysics as science is significantly used in different industries such as the mining industry, the geotechnics, engineering geology, hydrogeology etc. In the Republic of Macedonia the usage of geophysics researches while determining the geological and structural characteristics of the working environments is not nearly on the level on which it should be. For these reasons this paper is going to elaborate the usage and the practicality of the geophysical examinations in the mining industry. The example elaborated in this paper is based on data gained from the coal mine “Suvodol”. Through examination of the parameters from the boreholes and the geological map of the coal mine we determinate the layered structure of the ore body that provides favorable conditions for applying the method of geo-electrical sounding. For this purpose, we use a measuring composition made of two current and two potential electrodes placed inline in Schlumberger layout. Synthetic curves for real electrical resistance can be made while using the processed data from the boreholes. If the method is solved indirectly from these curves we can determine the specific electrical resistance of the materials which are present in the examined environment. The depth of the examined area that is stimulated by the electrical current directly depends on the distance of the current electrodes. After every new measuring the current electrodes are successively drifting away and thereby we gain values for the apparent electrical resistance for different depths in the examined area. By connecting the values of the apparent electrical resistance, we create a curve for apparent electrical resistance of the environment. A geo-electrical model of the researched environment is created by connecting all obtained curves. By processing the geo-electrical model using the data gained from the curves of the real electrical resistance, a geological image for the examined environment can be made. When researching a specific environment with applying geophysical methods the number of the boreholes which are necessary for establishing the geological map can be reduced. The loss of data that occurs by the reduction of the number of the boreholes is compensated with the data gained from the geophysical researches and therefore when researching geologically known or unknown environments with the use of the geophysical methods the costs can significantly reduce.

Item Type: Article
Subjects: Natural sciences > Earth and related environmental sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Blagica Doneva
Date Deposited: 22 Jan 2014 15:28
Last Modified: 22 Jan 2014 15:28

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