Groitzscher Dreieck opencast mine

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Groitzscher Dreieck opencast mine
General information about the mine
Mining technology Open pit
Overburden 243.5 million t
Funding / total 45.6 million t
Information about the mining company
Start of operation 1974
End of operation 1991
Successor use Replenishment to the Groitzscher See ; The deferred part is planned as the “Groitzscher Dreiech” mining field of the United Schleenhain opencast mine
Funded raw materials
Degradation of Brown coal / brown coal / brown coal / brown coal
Brown coal

Seam name

Böhlener Oberflöz
Brown coal
Degradation of Brown coal

Seam name

Thuringian main seam
Brown coal
Degradation of Brown coal

Seam name

Saxon-Thuringian sub-seam
Brown coal
Degradation of Brown coal

Seam name

Borna main seam
Geographical location
Coordinates 51 ° 6 '33.4 "  N , 12 ° 19' 9.4"  E Coordinates: 51 ° 6 '33.4 "  N , 12 ° 19' 9.4"  E
Groitzscher Dreieck opencast mine (Saxony)
Groitzscher Dreieck opencast mine
Location Groitzscher Dreieck opencast mine
local community Groitzsch
District ( NUTS3 ) Leipzig
country Free State of Saxony
Country Germany
District Central German lignite district

The Groitzscher Dreieck opencast mine was an opencast mine for the extraction of lignite in the southern area of ​​Leipzig. It had been in operation since 1974 and was shut down early in 1991. This had not yet been mined area to 2030 as Groitzscher mining field triangle of mine United Schleenhain are ascended again. After recultivation, the Groitzscher See was created on the disused part as a post- mining landscape . The Groitzscher Dreieck opencast mine is part of the Borna district in the Central German mining region .

Geographical location

The Groitzscher Dreieck opencast mine was located south of Leipzig between the Saxon town of Groitzsch in the north-west and the Thuringian town of Lucka in the south-east. The federal highway 176 delimits the planned mining field in the north. Part of the Gaschwitz – Meuselwitz railway line, which is now closed, had to give way to the opencast mine.

The disused area of ​​the Groitzscher Dreieck opencast mine is located in the south of the area. The Groitzscher See was created in this recultivated area. This post-mining landscape is still subject to mining law and cannot be used by the public. The not yet dismantled northern part is to continue to be operated as the “Groitzscher Dreieck mining field” of the United Schleenhain opencast mine from 2030 onwards. Lookout points are located in the towns of Maltitz and Hemmendorf to the south of the area .

history

Start of lignite mining

Since the overburden above the Böhlener Oberflöz in the Borna mining area is not very thick, it was possible to extract lignite of inferior quality in the region early on. However, major successes in coal mining have only been recorded since the middle of the 19th century. If the coal was initially mined in underground pits and smaller opencast mines, numerous large opencast mines were built in the southern area of ​​Leipzig and in the Meuselwitz-Altenburg lignite district from the middle of the 20th century. In the vicinity of the Groitzscher Dreieck opencast mine, which was not open until late, these were the Schleenhain opencast mine (1949–1994) in the east, the Peres opencast mine (1963-1991) in the north and the Phoenix opencast mine (1905–1968) in the south.

Groitzscher Dreieck opencast mine

On April 21, 1974, preparations began to open the Groitzscher Dreieck opencast mine. The Aufschlussbaggerung took place on June 28, 1975 to the northwest of today Groitzsch associated local Bernsdorf . The spoil moved clockwise, first to the south, then to the north. The north-western parts of Berndorf were devastated as early as 1976. The exposed masses of the opencast mine were housed between 1974 and 1979 in the remaining hole of the disused opencast mine Phönix-Ost near Meuselwitz .

Coal mining began on April 18, 1978. Zschagast, east of Michelwitz , with 129 inhabitants, was devastated in 1981. In preparation for dismantling, Käferhain, with its 177 inhabitants north of Zschagast and east of Methewitz , was cleared in 1984 . The Groitzsch – Lucka section of the Gaschwitz – Meuselwitz railway , where Käferhain had a stop, was closed on September 27, 1976 and then partially dismantled. The track that has been preserved has since been used as a connecting line to the excavator assembly area at Groitzscher Dreieck. In 1989 the excavators reached the Käferhain corridor. This year, the removal of the overburden resulted in a switch from train operation to belt operation.

The economic change accompanying the German reunification in 1989/90 led to a significant decline in the demand for lignite, which resulted in the early closure of the Groitzscher Dreieck opencast mine on December 20, 1991. This stopped the planned devastation of Langenhain . Since the open pit was opened in 1975, a third of the mining area had been charred. A total of 243.5 million cubic meters of overburden were moved and 45.6 million tons of raw coal were extracted. Due to the early closure of the opencast mine, the Käferhain corridor was only partially dredged. In contrast to other open-cast mines in the Central German lignite mining area, the mining of the remaining two thirds in the northern part of the open-cast mine was not abandoned, only suspended. It has been part of the United Schleenhain opencast mine since 1995 as the “Groitzscher Dreieck mining field”, where it is the third mining field alongside the “Schleenhain” and “Peres” mining fields. The dismantling is to continue in 2030.

Situation since 1991

Shortly after the unscheduled premature closure of the Groitzscher Dreieck open-cast mine, the rehabilitation of the areas used for mining began. These included u. a. securing the embankments and dismantling the large equipment. In the area of ​​the remaining open pit , the 840-hectare Groitzscher Lake is being created , the flooding of which is due to be completed by rising groundwater in 2060.

On January 1, 1994, a contract stipulated the division of the East German lignite mining into a privatized part to be shut down and a part to be continued. In the area of ​​the Schleenhain , Peres and Groitzscher Dreieck opencast mines , this meant that the mining fields to be continued as the United Schleenhain opencast mine will continue to be operated by MIBRAG from 1994/95 until 2040. The disused areas were handed over to the LMBV or its predecessor company for renovation and recultivation . She also took over the security in the deferred area. After the renovation was completed, the redeveloped dump area of ​​the Groitzscher Dreieck opencast mine changed to MIBRAG on October 29, 2008. This serves the planned resumption of lignite mining from 2030.

The city of Groitzsch, on whose territory the planned “Groitzscher Dreieck” mining field is located, spoke out against re-opening the mining field in 2016. The reason for this is that the Obertitz district , which is located in the northern area of ​​the mining field and is designated as a "reserved area", is then threatened with excavation. Furthermore, the flooding Groitzscher See would have to give way to the new open-cast mine. According to statements from the city administration, 17 districts of Groitzsch are affected by the opencast mine. a. by noise and the conveyor systems.

Production capacity of the opencast mine until 1991

The open pit in numbers

The mining area of ​​the Groitzscher Dreieck opencast mine belongs to the Weißelster basin, in which four seams lying one above the other could be mined. The following seams were of varying thickness and were separated from each other by intermediate layers of sand and clay:

  • Saxon-Thuringian sub-seam (seam I) (only mined in the Schleenhain opencast mine)
  • Borna main seam (seam II)
  • Thuringian main seam (seam III)
  • Böhlener Oberflöz (Seam IV)

In the Groitzscher Dreieck opencast mine (total duration between 1974 and 1991) 243.5 million cubic meters of overburden were mined in 17 years and 45.6 million tons of coal in 14 years.

technology

Place of use Type Device number Construction year Comment / whereabouts
Overburden operation Bucket ladder excavator ERs 710 353 1984 after 1991 in the United Schleenhain opencast mine
Overburden operation Bucket ladder excavator ERs 560 289 1959 Scrapped in 1993
Overburden operation Bucket ladder excavator ERs 560 316 1965 Scrapped in 1993
Overburden operation Bucket ladder excavator ERs 1120 1701 1986 after 1991 in the United Schleenhain opencast mine
Overburden operation Bucket wheel excavator SRs 1300 1517 1980 after 1991 in the United Schleenhain opencast mine
Overburden operation Bucket wheel excavator SRs 1300 1541 1984 after 1991 in the United Schleenhain opencast mine
Coal mining Bucket wheel excavator SRs 630/800 1465 1962 Scrapped in 1995
Coal mining Bucket wheel excavator SRs 630/800 1418 1959 Scrapped in 1993
Overburden operation Belt trailer BRs 1600 832 1990 after 1991 in the United Schleenhain opencast mine
Tilt Spreader A2Rs-B 10000 1124 1990 after 1991 in the United Schleenhain opencast mine
Tilt Weaning As 1120 1024 1958 on the outer tip of Phoenix-Nord , scrapped in 1992
Tilt Weaning As 1120 1041 1961 on the Haselbach III dump , scrapped in 1995/96
Tilt Weaning As 1120 1040 1960 on the outer tip of Phönix-Nord, scrapped in 1992/93
Tilt Weaners As 1600 1064 1965 Scrapped 1991/92

Devastated localities

Relocation site Residents Dismantling year
Berndorf (partially) 1976
Zschagast 35 1981
Beetle grove 124 1985/86 (partly excavated, due to deferral only from 2030)

The Groitzsch – Lucka section of the Gaschwitz – Meuselwitz railway , at which Käferhain had a stop, was shut down on September 27, 1976 due to the approaching opencast mine and then dismantled. The planned devastation of the Langenhain area was stopped in 1990. The town of Obertitz is located in the planned new development of the “Groitzscher Dreieck” mining field.

See also

Web links

Individual evidence

  1. ↑ Mention on p. 825
  2. ↑ The Käferhain stop at www.sachsenschiene.net
  3. ↑ Pictures of the closed Käferhain stop
  4. ↑ Description of the Gaschwitz – Meuselwitz railway at www.ferkeltaxe.de
  5. ^ Langenhain on the website of the city of Groitzsch
  6. ↑ The Groitzscher Dreieck opencast mine at www.schnaudertal.de
  7. ↑ The Groitzscher See on www.reitwanderfuehrer.de
  8. ↑ LMBV press release of November 4, 2008
  9. ↑ MIBRAG press releases, accessed on July 27, 2016
  10. ^ Message on www.mdr.de, accessed on August 13, 2016 ( Memento from August 13, 2016 in the Internet Archive )