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Reduction and utilization of coal mine waste rock in China: A case study in Tiefa coalfield

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  • Fan, Gangwei
  • Zhang, Dongsheng
  • Wang, Xufeng

Abstract

In China, coal mine waste rock (CMWR) produced during coal mining and processing is still increasing significantly as a result of coal production which has huge environmental impact. CMWR reduction and utilization is a major issue for coal enterprises and government to reduce the surface footprint and the public environmental impact. Tiefa coalfield, an old coalfield with 60 years of coal exploitation, was selected as a case to study the methods to minimize the environmental impacts of CMWR piles in a short period. We argue that a systematic design on CMWR utilization is needed on the basis of a usage evaluation which takes consideration of CMWR source, compositions, and proximate analysis. Mine design is crucial and the base for reducing the CMWR generation at the headstream. Placing roadway into coal seam rather than rock, panel optimization, and parametric analysis for mining technique were conducted in Tiefa coalfield. A promising technology of CMWR backfill under the ground was employed with a resultant increase of coal recovery rate. The surface CMWR recycling depends on brick making, electricity generating, and rehabilitation of subsided land. The practice of the presented methods indicates that the CMWR piles on Tiefa coalfield may disappear in 3 years, which could significantly reduce the environmental impacts of CMWR dumps. The technologies conducted in Tiefa coalfield developed a model of CMWR reduction and utilization for Chinese coal mines.

Suggested Citation

  • Fan, Gangwei & Zhang, Dongsheng & Wang, Xufeng, 2014. "Reduction and utilization of coal mine waste rock in China: A case study in Tiefa coalfield," Resources, Conservation & Recycling, Elsevier, vol. 83(C), pages 24-33.
    • Handle: RePEc:eee:recore:v:83:y:2014:i:c:p:24-33
    DOI: 10.1016/j.resconrec.2013.12.001
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    References listed on IDEAS

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    1. Simon Glauser & Mary Louise McAllister & Geraldo Milioli, 2005. "The challenges of sustainability in mining regions: The coal mining region of Santa Catarina, Brazil," Natural Resources Forum, Blackwell Publishing, vol. 29(1), pages 1-11, February.
    2. Franks, Daniel M. & Boger, David V. & Côte, Claire M. & Mulligan, David R., 2011. "Sustainable development principles for the disposal of mining and mineral processing wastes," Resources Policy, Elsevier, vol. 36(2), pages 114-122, June.
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    Cited by:

    1. Taha, Y. & Benarchid, Y. & Benzaazoua, M., 2021. "Environmental behavior of waste rocks based concrete: Leaching performance assessment," Resources Policy, Elsevier, vol. 74(C).

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