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Elena A. Khayrulina
Elena A. Khayrulina
Leading Researcher, Ph.D., Dr.Sci.
Natural Science Institute, Perm State National Research University
Leading Researcher, Ph.D., Dr.Sci.
Natural Science Institute, Perm State National Research University

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2022-11-04
  • Date accepted
    2023-03-03
  • Online publication date
    2023-03-30
  • Date published
    2023-04-25

Efficiency of acid sulphate soils reclamation in coal mining areas

Article preview

During the development of coal deposits, acid mine waters flowing to the surface cause the formation of acid sulphate soils. We study the effectiveness of soil reclamation by agrochemical and geochemical methods at the site of acid mine water discharge in the Kizel Coal Basin, carried out in 2005 using alkaline waste from soda production and activated sludge. A technosol with a stable phytocenosis was detected on the reclaimed site, and soddy-podzolic soil buried under the technogenic soil layer with no vegetation on the non-reclaimed site. The buried soddy-podzolic soil retains a strong acid рН concentration Н 2 О = 3. A high content of organic matter (8-1.5 %) is caused by carbonaceous particles; the presence of sulphide minerals reaches a depth of 40 cm. Technosol has a slightly acid pH reaction H 2 O = 5.5, the content of organic matter due to the use of activated sludge is 19-65 %, the presence of sulphide minerals reaches a depth of 20-40 cm. The total iron content in the upper layers of the technosol did not change (190-200 g/kg), the excess over the background reaches 15 times. There is no contamination with heavy metals and trace elements, single elevated concentrations of Li, Se, B and V are found.

How to cite: Mitrakova N.V., Khayrulina E.A., Blinov S.M., Perevoshchikova A.A. Efficiency of acid sulphate soils reclamation in coal mining areas // Journal of Mining Institute. 2023. Vol. 260. p. 266-278. DOI: 10.31897/PMI.2023.31