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HYDRODYNAMIC CONSEQUENCES OF THE OPEN PIT CLOSURE AND RECLAMATION IN THE ASPECT OF LABORATORY AND MODEL TESTS

Katarzyna Niedbalska

Abstract

Open pit reclamation is the final phase of mining activity to which every owner of the mining company is obliged. The selection of the target concept of the direction of decommissioning and reclamation of such excavation must be preceded by an analysis of the most optimal effects resulting from socio-economic and technical-environmental needs. The main research area on which research is being conducted is the sand open pit in the final phase of operation, whose excavations are simultaneously recultivated by their full backfilling with allochthone post-mining material (Carboniferous clastic compact rocks) from almost all hard coal mines in the Upper Silesian Coal Basin in Poland. Observations carried out on the research field selected by the authors indicate that due to the still dynamic situation resulting from the specificity of this object, the current approach with regard to the scope of laboratory and model tests is insufficient. Based on these conclusions, the authors proposed a modification and extension of the scope of laboratory tests supporting the stage of numerical modeling. A unified scheme of research activities verified in the laboratory scale was prepared, allowing for the selection of the underground water management method so that the environmental effects of mining exploitation and subsequent reclamation of the open pit would be as least onerous as possible over a long period of time.

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DOI resolver: doi.org/10.5593/sgem2019/1.2/s02.040

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