Lignite, electricity and heat Nochten and Reichwalde Opencast Mines Your contact person on site: Isa Töpfer Ö entlichkeitsarbeit Kraftwerk Boxberg T +4935774 43390 [email protected] September 2018 September → leag.de Spree Dahme e e ß e i r e p N S r e z it s u a L Raduschsee Schwansee Schäferteich 112 320 115 87 Lieberose Pulverteich Golßen Pinnower See Guben Lübben Schenken- döbener Großsee See 96 168 Byhlener See Pastling 8 Byhleguhrer See 97 87 A13 Lübbenau Konferenzcenter Malxe 9 Lübbenau 102 Peitz 168 Peitzer Spreeaue Teiche 2 Spree 112 Lichtenauer Jänschwalde See A15 Erlebnispark Teichland 87 Schlabendorfer Bischdorfer See See JÄNSCHWALDE 3 Vetschau COTTBUS-NORD A13 Lignite, electricity and heat Mining preparation and water A prerequisite for safe opencast mining is keeping Klinger See Cottbus 168 the deposit free of water. Filter wells with submersible Calau 96 97 Republik borehole pumps lower theF orstgroundwater / Lausitz level to below a NochtenA15 and 4 La Dobr u Polen s the lignite layer. Water treatment plantsi treat the tz 5 e r 6 N 7 e A15 iß raised water mainly as process water fore Schwarze Gräbendorfer 169 See Pumpe and Boxberg power plants. A portion is trans- A13 Reichwalde ferred to the peripheral area of the mine or serves to ood Hermannsdorfer Lake in Nochten’s postmining landscape. OpencastDrebkau 97 Altdöberner See Schwarze Elster Gut MinesGeisendorf Groß- räschen 14 Welzow WELZOW-SÜD Lusatia in the south of Brandenburg and Spr 96 ee Spremberg 156 101 northeast of Saxony is the second largest 156 Großräschener See lignite mining district in Germany. In opencast Sedlitzer mining, ligniteSee is extracted without subsidies Halbendorfer See uskau Bad Muskau Partwitzer M and converted into electricity and heat in n See h Schwarze a Blunoer b n 156 ise Senftenberg Südsee de nearby power plants safely, e ciently andPumpe in al Sabrodter Industriepark W See Senftenberger Weißwasser See an environ mentallyGeierswalder friendly manner.Bergener See 169 See Neuwieser See Turm am Spreetaler Schweren Berg See Schwarzheide S Erikasee pr ee 169 17 Location and overview Lugteich 115 Lauta 97 r e NOCHTEN d ö 96 R e e reserves of Nochten and Reichwalde are in ß Findlingspark o o r r G G Hoyerswerda Nochten the Free State of Saxony, near to the town Weiß- REICHWALDE wasser. Nochten opencast mine was opened up Speicherbecken Lohsa II in 1968 and delivered lignite to the Boxberg Boxberg Dreiweiberner See 169 power plant site for the first time in 1973. 156 e development of the Reichwalde opencast Wittichenau Bärwalder See 101 mineBernsdorf began in 1985, the first coal delivery Weißer Schöps followed two years later. Mining was stopped 97 in October 1999 for an intermediate period. Almost ten years later, the demand for lignite 98 increased again with the construction of a new 96 Opencast mine Lignite-red power plant Lignite mine eld Lookout point opencast mining 98 675 megawatts power plant unit at the Boxberg 20 Operational areas Power plant communication centre site. After extensive modernisation measures 156 Branden- Intermediate greening Opencast surface facilities Niesky burg Reichwalde resumed coal production in 2010. Recultivated areas Lignite mining planned Lausitzer Braunkohlenrevier Sachsen 2 km N Spree Dahme e e ß e i r e p N S r e z it s u a L Raduschsee Schwansee Schäferteich 112 320 115 87 Lieberose Pulverteich Golßen Pinnower See Guben Lübben Schenken- döbener Großsee See 96 168 Byhlener See Pastling 8 Byhleguhrer See 97 87 A13 Lübbenau Konferenzcenter Malxe 9 Lübbenau 102 Peitz 168 Peitzer Spreeaue Teiche 2 Spree 112 Lichtenauer Jänschwalde See A15 Erlebnispark Teichland 87 Schlabendorfer Bischdorfer See See JÄNSCHWALDE Approx. 3 Vetschau COTTBUS-NORD A13 Klinger See Cottbus 168 Calau million t 96 97 30 Republik Forst / Lausitz a A15 of lignite are mined annually 4 La Dobr u Polen s i tz 5 e in Nochten und Reichwalde r 6 N 7 e A15 iß opencast mines. e Gräbendorfer 169 See A13 Uncovering the lignite e upper layers of soil above the raw material are Drebkau 97 extracted in the so-called pre-cut. is is carried Altdöberner See Schwarze Elster out in Nochten deploying a bucket wheel excavator Gut Geisendorf type SRs 6300 – with a height of 65 metres and a bucket wheel diameter of 17 metres the largest in the Groß- räschen Lusatian mining district. e overburden extracted in 14 Welzow WELZOW-SÜD Spr the pre-cut is transported by kilometres of conveyor 96 ee Spremberg 156 101 156 belts to the side of the opencast mine already coaled Großräschener See out, where it is dumped as the uppermost soil layer Sedlitzer See for the rehabilitation of the land later. Lignite mining Halbendorfer See uskau Bad Muskau Partwitzer M n See h Schwarze a Blunoer b n 156 ise Senftenberg Südsee de Pumpe al e lignite is exposed in both opencast mines by e lignite from the 2nd Lusatian seam is extracted Sabrodter Industriepark W See Senftenberger Weißwasser See Geierswalder Bergener overburden conveyor bridges of type F 60. In Nochten, directly under the overburden conveyor bridge. See 169 See Neuwieser See Turm am the equipment group consists of three high-perfor- In the Reichwalde opencast mine, this layer of lignite Spreetaler Schweren Berg See Schwarzheide mance bucket chain excavators and a conveyor bridge, is between nine to eleven metres thick, in Nochten S Erikasee pr ee 169 17 which is 670 metres long. This makes it one of the opencast mine up to 15 metres – equivalent to a ve- Lugteich 115 Lauta 97 r largest mobile equipment complexes in the world. It oor building. In both opencast mines, two bucket e NOCHTEN d ö 96 R e enables removing the overburden, conveying it across wheel excavators and two bucket chain excavators ß Findlingspark o r G Hoyerswerda Nochten the coal mine at the shortest possible distance and extract the raw material. A special feature of the REICHWALDE Speicherbecken dumping it in one work step. e F 60 in the Reich- Nochten opencast mine is that the 1st Lusatian seam Lohsa II Boxberg walde opencast mine is coupled to two bucket chain is also mined here between the process lines of the Dreiweiberner See 169 excavators and is around 500 metres long. pre-cut and the F 60. It is about three metres thick 156 on average. Wittichenau Bärwalder See 101 Bernsdorf Weißer Schöps e opencast mines Nochten and Reichwalde are e lignite from the Nochten und 97 Reichwalde opencast mines is the main suppliers of the Boxberg power plant. deposited at depths of up to Nochten lignite is also supplied to Schwarze Pumpe 98 96 power plant and re nery. Coal from Reichwalde is 98 also used in the Schwarze Pumpe and Jänschwalde 20 156 power plants. Niesky 100 m e landscape after mining Mining of lignite is always followed by the rehabilita- Hermannsdorfer Lake lies within this area. With tion of the areas, the recultivation. No ton of lignite is the “New Jeseritzen“, a moor initial founded on extracted without it being clear what the postmining peat from the opencast mine fore eld is being area will look like. developed immediately adjacent. Nochten Boulder Park (Findlingspark Nochten) not far from the Box- One third of the trees newly planted for a orestation berg power plant is also an example of landscape in the mining area, mainly pine, birch and English oak, design on recultivated areas. now grow in the Nochten opencast mine. Experts use forest genetic maintenance measures to safeguard the As early as the 1990s, mixed forest areas were genetic material of old trees, in particular sessile oaks established on the inner tip of the Reichwalde and Scots pines, from the opencast mine fore eld. opencast mine, into which open-land biotopes e seeds obtained are used for reforestation. and agricultural land are integrated. Reforestation will remain the dominant element of the post- Open spaces structured with smaller trees and mining landscape of Reichwalde in the coming shrubs are typical for the postmining landscape near years. e emerging forests will serve both timber Weißwasser. Here heather, juniper and dry grasslands production as well as recreation and nature and dominate the landscape. A 16-square kilometre species protection. In addition, a 120-hectare recultivation area is reserved solely for nature agricultural area is being built on the southern conservation. e future, over 200 hectares large edge of the opencast mine. Nochten opencast mine 1 Preparation for mining 2 Overburden removal 3 Lignite mining 4 Creation of postmining landscape 4 3 2 1 Key gures for theopencast power mining plant Nochten Reichwalde Plant III Unit Q Unit R opencast mine opencast mine Installed capacity bucket2 × 500wheel bucket wheel 900 MW 675 MW (gross) excavatorMW excavator SRs 6300: SRs 2000: Unit e ciency (net) 14,000 m36 % /h 42 % 7,700 m>/h 43 % Steam generating Overburden overburden815 t/h 2,422overburden t/h 1,708 t/h capacityremoval per boiler conveyor bridge conveyor bridge Live-steamtheoretical volume pressure AFB163 F 60: bar 266 barAFB F 60:286 bar 26,800 m/h 29,000 m/h Live steam A river relocates 535 °C 545 °C 600 °C temperature spreader spreader ARsB 15400: ARsB 10000: Reheat steam 20,000 m40 bar/h 58 bar10,000 m54/h bar Until a few years ago, a canalised section of the river pressure Weißer Schöps ran through the northern eld of the bucket wheel bucket wheel Reheat steam excavator540 °C SRs 581 °Cexcavator610 SRs °C temperature Reichwalde opencast mine, which had to be relocated coal mining 1301: 2,625 t/h 1301: 2,625 t/h for the progress of mining.