Online Google Dictionary

overburden 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/ˌōvərˈbərdn/,
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overburdened, past participle; overburdens, 3rd person singular present; overburdening, present participle; overburdened, past tense;
  1. Load (someone) with too many things to carry
    • - they were overburdened with luggage
  2. Give (someone) more work or pressure than they can deal with
    • - the courts became overburdened with large numbers of relatively trivial offenses
    • - overburdened teachers
Noun
  1. Rock or soil overlying a mineral deposit, archaeological site, or other underground feature

  2. An excessive burden
    • - an overburden of costs
  1. the surface soil that must be moved away to get at coal seams and mineral deposits
  2. burden with too much work or responsibility
  3. load with excessive weight
  4. overload: an excessive burden
  5. Overburden is the material that lies above the area of economic or scientific interest (in mining and archaeology) e.g., the rock, soil and ecosystem that lies above the coal seam or ore body. It is also known as 'waste'. ...
  6. Rock and soil cleared away before mining.
  7. Material covering a mineral seam or bed that must be removed before the mineral can be removed in strip mining.
  8. A layer of rocky, clay-like material directly above the oil sand deposit.
  9. Soil or rock lying on top of a pay formation.
  10. Rock material overlying the coal deposit, but excluding soil. Soil is generally removed separately for use in reclamation.
  11. all the materials that are located above the desired ore deposit, ie. Soil or vegetation such as trees, plants, and rock.
  12. is in GEMIS a part of the solid wastes, characterizing the wastes from extraction of primary energies and raw materials.
  13. The soil pressure at a depth of intertest.
  14. A term used primarily by roofing professionals to refer to the entire green roof system above the waterproofing. (Breuning)
  15. The layers of material, rock and soil, that overly a coal seam.
  16. removal is the most important operation in the system. When the haul distances are small (for example, 500 to 1,000 metres) and the overburden material soft, a fleet of scrapers can load, haul, and dump the overburden. ...
  17. Rock and materials that must be removed prior to mining the mineral deposit beneath it.
  18. Unconsolidated materials overlying rock.
  19. Material of any nature, consolidated or unconsolidated, that overlies a deposit of useful and minable materials or ores, especially those deposits that are mined from the surface by open cuts or pits.
  20. A layer of sand, gravel, and shale between the surface and the underlying oil sand. Must be removed before oil sands can be mined. Overburden underlies muskeg in many places.
  21. The layers of surficial sediments that cover bedrock and need to be removed before mining can take place.
  22. Material of any nature, including loose soil, sand, gravel, that lies above bedrock or a deposit.
  23. the rock and soil lying above a fossil deposit in situ.
  24. Material overlying a deposit of useful geologic materials or bedrock.
  25. Worthless or low-grade surface material covering a body of useful mineral. The frozen muck covering dredge gravels in Central Alaska is an example of placer overburden.