Project Global: Ground


This exploration of our current day metropolitan condition as a system of systems deals with the crust of the Earth as a primary carrying capacitor of human activities, from the extraction of resources deep within the ground, to agricultural operations that barely scratch the surface.

Part 1: Lexicon

Part 2: Atlas



Part 1: Lexicon index

︎ Formation

    ︎ Kaapvaal Craton
    ︎ Johannesburg Dome
    ︎ Vredefort Dome
    ︎ Topsoil
    ︎ Müggelsee


︎ Measurement    ︎ Schwerbelastungskörper
    ︎ Mining Earthquakes
    ︎ Low-tech Soil Testing
    ︎ Soil Texture Triangle
    ︎ Geologic Time Scale 
    ︎ Stratigraphic Colum
    ︎ Geographic Information System
    ︎ Ecotone
    ︎ Cultural Landscape

︎ Prototype
    ︎ Unter den Linden
    ︎ Zoological Landscape
    ︎ Counterculture
    ︎ Cultural Agency
    ︎ Mine-pit Lakes
    ︎ Parliament of Things

︎ Land distribution
    ︎ 1913 Natives Land Act
    ︎ District Six
    ︎ Eavesdropping
    ︎ Reconciliation Policy
    ︎ Land Grabbing
    ︎ Land Acting
    ︎ The Red Ants
    ︎ #PutSouthAfricansFirst
    ︎ Suburban Enclaves
    ︎ Parallel State

︎ Extraction
    ︎ Cullinan Diamond Mine
    ︎ Platinum Group Metals
    ︎ Zamazamas
    ︎ Gold Rush Inertia
    ︎ Sinkhole
    ︎ Maize Doctor
    ︎ Coal Hands

︎ Infrastructure
    ︎ Gautrain
    ︎ Le-guba
    ︎ Lesotho Water Project
    ︎ Deutscher Wald
    ︎ Arrival City

︎ Production
    ︎ Safari Economy
    ︎ Agritourism
    ︎ Rainfall Line
    ︎ Upington Airport
    ︎ Tiergarten Transformation
    ︎ Pivot Irrigation
    ︎ Allotment Garden
    ︎ Bokoni Terracing
    ︎ Johannesburg Forestation
    ︎ Game Farming Cycle

︎ Waste
    ︎ Trümmerberg
    ︎ Fab-Soil
    ︎ Mining Waste Belt
    ︎ Sanitary Landfilling
    ︎ Soil Structure
    ︎ Biogas Technology

︎ Pollution
    ︎ Dry Stacked Tailings
    ︎ Water Pollution
    ︎ Soil Pollution
    ︎ Uranium Sandstorms
    ︎ Poaching

︎ Remediation
    ︎ European Green Belt
    ︎ Conservation Agriculture
    ︎ Airfield Urbanism
    ︎ Solar Park
    ︎ Gold Reef City
    ︎ Mine Pit Lake
    ︎ Loess Plateau
    ︎ Erosion Control




Mine-pit Lakes

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The Lusatia Lake District is a prototype for landscape transformation of degraded environments and landscapes. Located at the northeast of Germany, the former lignite open-cast mines site covers an area of 11,582 square kilometers within the limits of two federal states, Brandenburg and Saxony, approximately one-hundred kilometers from Berlin. Once the second largest
lignite
mining region in Germany, the Lusatia Lake District is now Europe’s biggest network of manmade lakes.1
        The rehabilitation of the area has been a phased process of flooding residual mine pits, reforestation of rubble plateaus, and recultivation of mining wastelands. Lake Senftenberg was the first pit to be rehabilitated in 1972, but it was only until 1994, after Germany’s reunification, that the government developed a comprehensive plan along with the company Lausitzer und Mitteldeutsche Bergbauverwaltungsgesellschaft to rehabilitate the whole Lusatia basin area. Due to its scale and ambition the project is one-of-a-kind and establishes an example for future rehabilitations. Still ongoing, the rehabilitation plan has shifted to focus on economic and social dimensions: after the closure of the lignite mines, the area’s economy also suffered. To compensate for the lost jobs, specific strategies have been put in place for touristic, cultural, business, and scientific developments that have prioritized renewable development energy policies  that install renewable energy production facilities such as wind farms, photovoltaic parks, and hydrogen plants in the former mines wastelands.2
        The lake district is characterized by the numerous mine-pit lakes spread throughout the territory that were once used in open-pit mining operations. Open-pit mining extracts large
ore bodies
, creating large gaps in the landscape. In South Africa, this technique has also been used to create tourist attractions in former mining cities.
        The mine pit flooding process can be done in two ways: by passive or active flooding. The most commonly-used method is the latter, best suited for the rehabilitation of the water balance of the former open-cast mines. Here, water from rivers or other bodies of water is fed into the open pit. The external flooding accelerates the rise in the water level in the remaining open pit. However, only a few open pit holes are geographically located in a way that they can be flooded directly by surface water. The flooding water often has to be pumped into the remaining hole over long distances. This usually requires several pumping stations. At the end of the flooding process, a residual open pit lake is created that can be used for local recreation.3
        Even though mine pit lakes are a different way of regenerating former mines, the quality in the water is usually linked to contamination, mine waste and can take some time to be apt for recreational use. In this sense, a thorough evaluation of the ecosystem should be done and with the implementation of methods like plantings in existing biotopes, the treatment of the water and an optimized design to avoid negative side effects, these lakes could have a positive impact on the landscape.


Image source: Lausitzer Seenland Accessed March 6th 2022. https://www.oberlausitz.com/lausitzer-seenland



References
1.  Irimie, Sabina. From mining to dream vacation "Lusatian Lake District", Germany. September 2009. https://tracer-h2020.eu/wp-content/uploads/2020/02/11-TRACER_D2.4-Good_Practice_From-Mining-to-Dream-Vacation_Lusatia-Germany.pdf
2.  Deshaies, Michel Metamorphosis of Mining Landscapes in the Lower Lusatian Lignite Basin (Germany): New uses and new image of a mining region. June 2020. https://journals.openedition.org/craup/4018

3.  “Flooding (open pit) - Flutung (Tagebau)”, Second Wiki, November 26, 2020, https://second.wiki/wiki/flutung_tagebau#cite_note-Quelle_8-8