Badania Fizjograficzne, Seria A, Tom 56, 2005
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Browsing Badania Fizjograficzne, Seria A, Tom 56, 2005 by Author "Wachowiak, Agata"
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Item Zbiornik w wyrobisku końcowym Odkrywki "Pątnów" Kopalni Węgla Brunatnego "Konin" i jego bilans wodny za okres 2003-2004(Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, 2005) Wachowiak, Grzegorz; Wachowiak, AgataThe idea of water recultivation and management of the closing open pits in the Lignite Opencast Mine "Konin" is of a growing importance. Hence, the necessity to explore water relations conditioned by SLich undertakings. Recultivation scheme of the closing open pit "Pątnów" of Lignite Opencast Mine "Konin" includes the construction of a 346 ha reservoir with the capacity of over 38 mln m. So far, it is the biggest reservoir built as a result of an open pit recultivation in lignite opencast mining in Poland. Part of the open pit will be Litilized as a power plant waste disposal. The reservoir has been filled since 2001. Initially, the natural water supply was planned - especially through groundwater inflow. This process, however, would have taken some 20 years. In order to speed up the completion of the reservoir, water from dewatering of other working open pits at Lignite Opencast Mine "Konin" has been directed into this reservoir. It is hoped, that thanks to this operation, the reservoir will be filled by 2006. The reservoir water balance was worked out for the hydrological years of 2003-2004. During this period, water table rose by about 13.3 m, and the capacity increased by almost 25.9 mln m reaching the total cubage of 48.8 mln m. The balance income (30.24 mln m) included precipitation (13.6%), discharge from mine dewatering (43.9%), and the resultant of groundwater supply (42.5%). The outcome elements included evaporation from surface water (71.5%) and evaporation from this part of the area of morphological catchment that is contained by the depression cone (28.5%). The expediency of monitoring for the period of reservoir filling and after its completion has been indicated.