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Witold Rudnicki
6 lat temu
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1 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

2 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)

3 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

4 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

5 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 ,5 20 Niesłusz ,5 148 Gosławice ,5 390 Pątnów Kazimierz Płd Kazimierz Płd Kazimierz Płn Lubstów Józwin IIB Drzewce

6 WATER RESERVOIR - PĄTNÓW FINAL EXCAVATION

7 WATER RESERVOIR - PĄTNÓW FINAL EXCAVATION

8 FINAL EXCAVATIONS OF THE TURÓW and BEŁCHATÓW OPEN PITS Odkrywka Rok zakończenia eksploatacji Powierzchnia [ha] Głębokość [m] KWB TURÓW O/Turów KWB BEŁCHATÓW O/Bełchatów O/Szczerców

9 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 m 3 /min the surface of the cone of depression 705 km 2

10 BEŁCHATÓW LIGNITE OPEN PIT

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

12 W poltegor engineering Ltd. MANAGEMENT OF THE BEŁCHATÓW MINE FINAL EXCAVATION Szczerców Bełchatów E +185m asl Internal dumping (till 2038) m asl Wate r re s e rvo ir V=1.0 mld m m 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 m asl Internal dumping are Making excavation shallow m asl -85m asl Dębina salt diapir m asl m final area approx km 2 final depth approx. 100 m final volume approx 2.4 bill. m 3

13 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 km

14 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

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