poltegor - projekt sp. z o.o.

poltegor - projekt sp. z o.o. WATER MANAGEMENT AT ABANDONED LIGNITE OPEN PITS IN POLAND JACEK SZCZEPIŃSKI LUDWIK SEWERYN SPILM KRAKÓW, 4-6 NOVEMBER 2004

OPEN PITS IN POLAND MORE THAN 2000 SURFACE MINES UNDER OPERATION rock quarries - production of approx. 140 Mg lignite mines - production of approx. 60 Mg YEARLY INCREASE IN SPACE OF OPEN PITS APPROXIMATELY 120 mill. m 3 (Uberman, 1999)

WATER MANAGEMENT AT ABANDONNED OPEN PITS IN POLAND Rock minerals surface mining management does not present major problems, owing to an inconsiderable depth and size of abandonned open pits Sulphur surface mining in the course of preparation for water management; there are two abandoned open pits Machów and Piaseczno with volumes of 155 mill. m 3 i 37 mill. m 3, respectively Lignite surface mining some abandoned open pits are managed for water purposes; in the future water management is expected in case of open pits with up to 1.4 bill. m 3 SPILM KRAKÓW, 4-6 NOVEMBER 2004

LIGNITE PRODUCTION IN POLAND KWB SIENIAWA 1 open pit under operation KWB KONIN 10 open pits (5 under operation) Sieniawa KWB ADAMÓW 4 open pits (3 under operation) Konin Ada mów WARSZAWA KWB BEŁCHATÓW 2 open pits under operation Turów WROCŁAW Be łcha tów KWB TURÓW 1 open pit under operation KRAKÓW

WATER MANAGEMENT OF ABANDONED OPEN PITS IN KONIN LIGNITE MINE (Michalski, 2004) Open pit Completion of Area (ha) Volume lignite production (thousands m 3 ) Morzysław 1953 2,5 20 Niesłusz 1961 18,5 148 Gosławice 1974 32,5 390 Pątnów 2000 346 83.500 Kazimierz Płd 1997 35 880 Kazimierz Płd 1997 65 2.100 Kazimierz Płn. 2011 360 190.000 Lubstów 2010 475 144.000 Józwin IIB 2021 420 147.180 Drzewce 2022 125 12.500

WATER RESERVOIR - PĄTNÓW FINAL EXCAVATION

WATER RESERVOIR - PĄTNÓW FINAL EXCAVATION

FINAL EXCAVATIONS OF THE TURÓW and BEŁCHATÓW OPEN PITS Odkrywka Rok zakończenia eksploatacji Powierzchnia [ha] Głębokość [m] KWB TURÓW O/Turów 2026 1740 270 KWB BEŁCHATÓW O/Bełchatów 2017 1750 280 O/Szczerców 2032 1500 280

BEŁCHATÓW LIGNITE MINE LARGEST OPERATIONS 34 mill tons of lignite per year 157 mill m 3 of overburden per year up to 5 bill of water pumped out from 1975 to now the mine water inflow 170-650 m 3 /min the surface of the cone of depression 705 km 2

BEŁCHATÓW LIGNITE OPEN PIT

MANAGEMENT OF THE BEŁCHATÓW LIGNITE MINE Szczerców open-pit Bełchatów open-pit face advance 2002-2032 opening udostępnianie up 2002-2006 2002-2006 final excavation Dębina salt diapir final excavation face advance 1977-2017 opening up 1977-1981 depth of final excavation approx. 280 m total volume of final excavation approx. 3.7 bill m 3

W poltegor engineering Ltd. MANAGEMENT OF THE BEŁCHATÓW MINE FINAL EXCAVATION Szczerców Bełchatów E +185m asl Internal dumping (till 2038) +45 - -15m asl Wate r re s e rvo ir V=1.0 mld m +90 - +95m npm Making excavation shallow 3 ~+200m asl Wate r re s e rvo ir V= 1.4 mld m +205m asl +120m asl +120m asl +90 - +95m asl Internal dumping are Making excavation shallow 3-15 - +25m asl -85m asl Dębina salt diapir -70 - -80m asl 0 1000m final area approx. 32.5 km 2 final depth approx. 100 m final volume approx 2.4 bill. m 3

HYDRODYNAMICAL CONDITIONS IN THE AREA AT THE ABANDONED BEŁCHATÓW LIGNITE OPEN PITS - PROGNOSIS GRANICA WODODZIAŁU RZ. GRABIA POLSKA RZ. WIDAWKA WARSZAWA ZELÓW WROCŁAW RZ. GRABIA RZ. RAKÓWKA RZ. P ILSIA N RZ. DĄBRÓWKA SZCZERCÓW BEŁCHATÓW RZ. NIECIECZ RZ. WARTA GRANICA MODELU RZ. LUCIĄŻA RZ. WIDAWKA Zwałowisko zewnętrzne o/szczerców Składowisko Bagno-Lubień RZ. KRASÓWKA Zwałowisko zewnętrzne o/bełchatów KRAKÓW RZ. WĘŻNICA RZ. P RUDKA PAJĘCZNO Zbiornik Zbiornik szczercowski bełchatowski RZ. LUCIĄŻA RZ. WIDAWKA RZ. P ISIA DZIAŁOSZYN RADOMSKO RZ. WARTA RZ. RADOMKA RZ. WARTA 0 4 8 12km

PROBLEMS RELATED TO WATER MANAGEMENT AT HUGE ABANDONED LIGNITE OPEN PITS The dynamics and duration of reservoirs water filling process as well as ground water table reconstruction in the region - in natural conditions - with the enhancement of recharge with water from outside the cone of depression Change of hydrodynamical, hydrological and hydrochemical conditions in the mining region on completion of water management Determination of stability of slopes and edges of the abandoned open pits during the process of water filling (waves effect) Future use of the new large lakes (fishing,recreation etc.) Estimation of costs relevant to the water management of such a type of excavations