Gröbern opencast mine
| Gröbern opencast mine | |||
|---|---|---|---|
| General information about the mine | |||
| Mining technology | Open pit mining on 600 ha km² | ||
| Funding / total | 102 million t 18.2 million | ||
| Information about the mining company | |||
| Start of operation | 1966 | ||
| Successor use | Flooding to the Gröberner See | ||
| Funded raw materials | |||
| Degradation of | Brown coal | ||
| Geographical location | |||
| Coordinates | 51 ° 42 '12 " N , 12 ° 26' 56" E | ||
|
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| Location | Coarser | ||
| local community | Mulde reservoir | ||
| District ( NUTS3 ) | Anhalt-Bitterfeld | ||
| country | State of Saxony-Anhalt | ||
| Country | Germany | ||
The open pit Gröbern was an open pit of lignite Combine Bitterfeld for the production of lignite southeast of Gräfenhainichen .
In the Bitterfeld, Wittenberg and Torgau area, there is a terminal moraine area known as the Graefenhainichen-Schmiedeberg plateau (see also Dübener Heide ) . Lignite-bearing layers lie beneath its Pleistocene cover. Lignite was mined here in several construction fields .
Open pit mining
As early as 1940 and 1966, the first excavation movements took place as the Barbara opencast mine . The Gröbern opencast mine, which was finally opened in 1984, supplied the Zschornewitz and Vockerode power plants with lignite for generating electricity when coal production began in 1987 . Initially, the overburden movement took place in train operations. From March 1986 the overburden was dumped as a high dump using a conveyor belt on the Barbara-Höhe (Halde Golpa) .
Paleontological and archaeological finds
The outer layers of the brown coal carried a lake basin from the Eem warm period (about 130,000 - 115,000 years before today), which has been preserved as a result of peat and mud with a large number of paleontological and archaeological finds. On June 8, 1987, the remains of an approximately 120,000-year-old forest elephant from the Eem warm period were uncovered. On the basis of the skeleton parts found, the dimensions of the elephant with five meters shoulder height, five tons weight and the tusk length with 2.5 meters were determined. In the layer of finds, flints were still found , which apparently Neanderthals served as a tool for cutting up the carcass. Whether this elephant was killed by humans or died naturally cannot be determined from the findings themselves. After recovery and preparation, the skeleton can be viewed as the Groebern Forest Elephant in the State Museum of Prehistory (Halle) .
Reclamation
The opencast mine was shut down in 1993 together with the coal-processing power plants. Originally, large parts of the Düben Heath were intended to be over- dredged . A bucket chain swing excavator weighing 2000 tons , which had been decommissioned early, was offered for sale for a long time.
A wind farm with eight turbines was built on the spoil dump south of Zschornewitz . The spoil dump towers over the site by around 50 meters and thus offers good conditions for the use of wind energy .
As a further recultivation measure for the post-mining landscape , the remaining open pit hole was flooded with groundwater and water from the basin through a pipeline from 2001 in order to accelerate the flooding. The Gröberner See was created by 2010 with a water surface of 368 hectares with 67 million m³ water volume.
Individual evidence
- ↑ Lothar Eißmann , Thomas Litt (ed.): The Quaternary Central Germany. A guide and excursion guide. = The Quaternary in Central Germany. With an overview of the pre-quaternary of the Saale-Elbe area (= Altenburger Naturwissenschaftliche Forschungen. H. 7, ISSN 0232-5381 ). Mauritianum, Altenburg 1994.
- ↑ Dietrich Mania , Matthias Thomae, Thomas Litt, Thomas Weber : Neumark-Gröbern - contributions to the hunt of the Middle Palaeolithic people (= publications of the State Office for Monument Preservation and Archeology Saxony-Anhalt - State Museum for Prehistory. Vol. 43). Deutscher Verlag der Wissenschaften, Berlin 1990, ISBN 3-326-00571-7 .
- ↑ [ https://www.leipzigseen.de/die-seen/groeberner-see.html Status of the production of the LMBV in Saxony-Anhalt] (PDF; 5.9 MB) , status at the end of 2018, accessed May 13, 2018 , P. 11