Известия Томского политехнического университета: Инжиниринг георесурсов (Jul 2022)

CHANGES IN HYDROGEOLOGICAL CONDITIONS OF THE SHUMIKHINSKY COAL DEPOSIT (PRE-URALS) AS A RESULT OF UNDERGROUND MINING

  • Alexander K. Imaykin,
  • Kamil K. Imaykin

DOI
https://doi.org/10.18799/24131830/2022/7/3482
Journal volume & issue
Vol. 333, no. 7
pp. 64 – 75

Abstract

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The relevance. Major changes in the hydrogeological conditions of the Shumikhinsky coal deposit during operation and after liquidation of the mine are identified and considered. Contamination of ground and surface waters by the technogenic horizon of acid mine waters and underspoil waters were established, the terms of termination of mine flooding and the volume of mine water outflow to the surface were determined. The work will be useful in the development of environmental protection measures. Research objective: to study the hydrodynamic regime of groundwater and mine water during operation and after abandonment of the mine; investigation of chemical composition of mine water, underspoil waters and contaminated groundwater. Methods: a review of general published sources, analysis of stock-keeping geological materials, hydrogeological monitoring data, field works performed by the authors in the mine field, and work with mine work plans. Results. A hydro-geological section of the Shumikhinskoe coal deposit, reflecting the hydro-geological conditions at the time of maximum development of mining operations and 20 years after their termination, was constructed. Combined graphs of changes in groundwater and mine water levels, as well as mine water inflows, were plotted. The causes and nature of changes in the hydrogeological conditions in the area of the mine field were identified, and a forecast of their changes was made. Conclusions. Mining works of mine «Shumihinskaya» had a great negative effect on the hydrogeological conditions of Shumihinskoe deposit. Mine liquidation did not result in full recovery of groundwater hydrodynamic conditions and caused formation of anthropogenic mine water table and increased groundwater pollution. If the rate of mine water rise remains unchanged, it is expected to be released to the surface through Pit 19 after 6 years.

Keywords