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Wpływ zatapiania kopalni „Trzebionka” na zmiany chemizmu wód podziemnych w utworach triasu

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Kasprzak A. , Motyka J.

tom Vol. 63, nr 10/1

805--809

The paper presents changes in groundwater chemistry of Triassic aquifer after zinc-lead mine flooding. Last stage of liquidation Zn-Pb “Trzebionka” mine has been started in July of 2010. Long lasting drainage caused oxidation of the sulphide minerals in hosted rocks of Zn-Pb deposits. Flushing of the extended unsaturated zone led to dissolving of weathering products. Those complicated processes caused significant increase in sulphates concentrations Prediction of consequence of mine flooding for water chemical composition is possible due to long term observation of the water quality in the “Trzebionka” zinc-lead ore. Currently water quality of Triassic aquifer is deteriorate.

Zmiany charakteru i skali zagrożenia wodnego w warunkach zatapiania kopalń węgla kamiennego

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Szczepański A.

2011

tom T. 67, nr 7-8

222--224

Każda eksploatacja złóż kopalin w tym i węgla kamiennego, prowadzona poniżej zwierciadła wód podziemnych stwarza zagrożenia wodne dla zakładu górniczego. Na etapie udostępniania i w trakcie prowadzonej eksploatacji kopalnia musi być odwadniana, zwykle poprzez systemy pompowni stacjonarnych lokalizowanych, w zależności od geologiczno-górniczych uwarunkowań, na jednym lub kilku poziomach wydobywczych w rejonie szybów. W warunkach częściowej i całkowitej likwidacji kopalń następuje stopniowe zatapianie wyrobisk górniczych poprzez wyłączanie stacji pomp zlokalizowanych na różnych poziomach lub też drogą kontrolowanego zatopienia systemem studziennym (w szybie instalowane są pompy głębinowe, z możliwością regulacji wysokości wody). W zatapianych wyrobiskach poeksploatacyjnych powstają podziemne zbiorniki wód, które wraz z dopływami wód naturalnych stanowią nowe zagrożenie wodne dla kopalń czynnych lub też innych poziomów eksploatacyjnych

Every exploitation of mineral deposits, including hard coal, below the underground water level, creates water hazard for the mine. At the stage of development and during the conducted exploitation the mine must be drained, usually through systems of stationary pumping stations located, according to mining-and-geological conditionings, on one or several exploitation levels in the area of shafts. In conditions of partial or entire closure of mines follows the gradual flooding of mine workings through the disconnection of pumping stations located on various levels or by means of controlled flooding using the well system (in the shaft deep-well pumps are installed with the possibility of water height regulation). In flooded post-extraction workings arise underground water reservoirs, which together with the inflows of natural waters constitute a new water hazard for operating mines or other exploitation levels.

Wpływ zatapiania likwidowanych kopalń węgla kamiennego w GZW na stan bezpieczeństwa powszechnego na terenach pogórniczych

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Bukowski P.

tom Vol. 72, nr 5

225--240

To answer the question whether and what is the impact of flooding of abandoned hard coal mines in the USCB (Upper Silesian Coal Basin) on the threat to general safety, it is necessary to refer to the essence of the problem, which is the flooding of closed mines and the impact of this processon the geological surroundings and the land surface. It is also necessary to be aware of what the terms threat and general safety mean. Thus, we will not answer the fundamental question prompted by the title, without characterizing the causes, course and consequences, as well as the connections, of hydrogeological processes with processes in the field of rock mechanics and safety, which we tried to present in the article. At the same time, the disclosure and subsequent occurrence of interconnections of hydrogeological and geomechanical processes leading to threats in post-mining areas would not be possible if these were not for the mining activities within the designated range of mining area. The key to explaining the causes, course and consequences of processes leading to hazards in post-mining areas is to understand the cause and effect a sequence of events, from granting a license to extracta mineral from a deposit to decision about underground coal mine closure. Processes and phenomena that occur after the closure of a mine and decommissioning its drainage system lead to various hazards, such as water hazards, sinkholes, flood hazards, mine gas outflows, etc. They are a consequence of previous mining activity and the overlapping and differentiation of various conditions (technical and geological) that change during the successive stages of the mine flooding process. Based on the experience from 20-30 years ago and on the hazards to the land surface in the flooded former Maria coal mine, it can be seen that these issues still constitute existing, although somewhat forgotten, knowledge that remains undeveloped and unnoticed to this day (caving hazard in the former Siersza coal mine). Hence, the article attempts to characterize and explain, as well as recall and discuss, some of the consequences of drainage system decommissioning and an underground mine closure by completely flooding its mining workings.