Sökning: "tailings dam"

Visar resultat 11 - 15 av 15 uppsatser innehållade orden tailings dam.

  1. 11. Investigation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Geoteknik

    Författare :Erik Månsson; [2014]
    Nyckelord :Technology and Engineering;

    Sammanfattning : In mining for extraction of metals residues are often produced. A frequently produced residue is tailings, which potentially contains high amount of metals, soluble salts and acids. Therefore, it is often necessary to deposit, the tailings in stable impoundments, namely tailings dams, if not all tailings produced is used as backfill in mines. LÄS MER

  3. 12. Seepage, stability and pollution transport of an upstream tailing dam with COMSOL.

    Master-uppsats, KTH/Mark- och vattenteknik

    Författare :Valentina Gonzales; Henrietta Åberg; [2013]
    Nyckelord :Tailing dam; Unsaturated soil; Seepage; Stability; Pollutant; COMSOL;

    Sammanfattning : In the early years of the 20th century the first tailing dams were constructed, the upstream tailing dam being the first type. Before this the tailings were disposed in the nearest stream or river. This caused legal issues between farmers and the mining companies, which ended the random discharge of the tailings. LÄS MER

  4. 13. Evaluation of Heavy Metals in Waters Influenced by Mining in the Poopó and Antequera River Basins, Oruro – Bolivia

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Malin Rosenberg; Kristofer Stålhammar; [2010]
    Nyckelord :thermal spring; surface water; groundwater; mining; heavy metals; Antequera River; Lake Poopó; Poopó River; arsenic; Technology and Engineering; Earth and Environmental Sciences;

    Sammanfattning : A study of heavy metals in surface and groundwater was conducted in Poopó and Antequera River basins in Bolivia. Problems with high levels of heavy metals in waters on the Bolivian high plateau have been known for many years and are to a great extent the cause of the mining industry in the region. LÄS MER

  5. 14. Diversion of water from a tailings dam : Spillway arrangement and spillway channel designed to be maintenance free for 1000 years

    Kandidat-uppsats, KTH/Vattendragsteknik

    Författare :Alba Llorens del Pino; [2007]
    Nyckelord :Spillway; erosion; filters; long-term stability; vegetation covers; Aliviadero; erosión; filtros; estabilidad a largo plazo; cobertura vegetal;

    Sammanfattning : An elaboration on how to construct a spillway for closure for a large tailings pond completely enclosed by embankments, leading to a situation where construction in bedrock is not possible is presented with the following conclusion. A stepped spillway arrangement constructed with granite blocks will require of large blocks for being stable, and will require of filters that are not always considered functional in long-term perspective. LÄS MER

  7. 15. Dammsäkerhetsutvärdering samt utformning av dammregister och felrapporteringssystem för svenska gruvdammar

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för geovetenskaper

    Författare :Nils Isaksson; Helena Lundström; [2005]
    Nyckelord :tailings dams; PLS-analysis; dam safety; statistic evaluation; database;

    Sammanfattning : A lot of mine waste rock and tailings arise from all mining processes and have to be stored in an appropriate way. Tailings are deposited in impoundments retained by tailings dams. LÄS MER