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Senftenberg, Germany

Complex geophysical investigations were conducted in the Cottbus-Nord opencast mine in Germany for controlling glaciogenlc disturbances of the seam. These complex geophysical investigations aimed at clarifying the glacial-tectonic conditions of the deposit in the concerned mining site. These investigations aimed at creating bases for optimized and efficient drilling exploration programs adapted to the deposit conditions. These investigations were also conducted to develop a realistic geological deposit model as a basis for comprehensive geotechnical work considering the diverse deposition conditions. Source

GMB, with its business field dump compaction, is actively contributing to the creation of a sustainable postmining landscape in the opencast mining area of Vattenfall Europe Mining AG. Fundamental technical innovations and improvements to the VC equipment assembly and the criteria of the selection of the crawler crane have been described. The improvement of the process and work safety, as well as new software solutions are important elements of the process optimization. Determining the exact position of the vibrator and the lance during the production process can lead to a significant increase in availability of the entire complex. The potential of "online-success monitoring" for further process optimization has great significance for practical usage in the future. Source

Based on the geological situation in the Cottbus-Nord open-cast mine, this article describes the capabilities of the methods gravimetry, seismics (2D and 3D) and geoelectrics for detailed exploration of complicated geological structures at the example of selected results. In the meantime, all three methods have taken their place for geotechnically evaluating and controlling the complicated geological conditions. Since 2004, with the start of the excavation of the glacio-tectonic fault zone "Am Hammerstrom" 120 geoelectrical measuring operations and 98 micro-gravimetry measurings have been conducted so far (09/2014). The result (Figure 9) provides an unique and detailed view into a difficult glacio-tectonic structure which decoding required a complex exploration strategy. In the opencast mine, a combination of geophysics, specially projected drillholes on the working level of the bridge and slope mapping and sampling have proved successful as a detailed exploration method. This approach will be further improved and can be recommended for controlling the geotechnical challenges in case of comparable deposit conditions. © 2015, GDMB Gesellschaft fur Bergbau, Metallurgie, Rohstoff- und Umwelttechnik e.V. All rights reserved. Source

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