A hydrogeological model of the open-cast mine Tamnava-West Field (Kolubara Coal Basin, Serbia)

Abstract

Abstract:The Kolubara Coal Basin is the largest coal-producing area in Serbia. It is administratively comprised of several open-cast mines: Field A, Field B, Field C, Field D, Field E, Field F, Field G, Veliki Crljeni, Šopić-Lazarevac, TamnavaWest Field, Tamnava -East Field, Radljevo, Zvizdar, Ruklade, and Trlić. The paper focuses on the largest active open-cast mine: Tamnava -West Field. A study and conclusions about the hydrogeologic functions of the lithologic strata, and insight into their spatial interactions, are extremely important for hydrogeologic modeling of a given area. The main purpose of a hydrogeologic model is to derive conclusions about the spread of the aquifers in the study area, their interactions, and groundwater flow conditions. Based on geologic and hydrogeologic exploration, and analysis and synthesis of the collected data, the paper describes hydrogeologic modeling of the open-cast mine Tamnava -West Field. The software used in the research provides a portrayal of the 3D distribution of the aquifers present in the study area. As such, the hydrogeologic model constitutes a basis for developing a hydrodynamic (mathematical) model of the groundwater regime. Keywords: hydrogeologic (conceptual) model, aquifer, model layers, hydrogeologic parameters Apstrakt: Kolubarski ugljonosni basen najveći je basen uglja u Republici Srbiji. U basenu je administrativnom podelom okontureno više površinskih kopova: "Polje A", "Polje B", "Polje C", "Polje D", "Polje E", "Polje F", "Polje G", "Veliki Crljeni", "Šopić-Lazarevac", "Tamnava -Zapadno polje", "Tamnava Istočno polje", "Radljevo", "Zvizdar", "Ruklade" i "Trlić". U ovom radu, istražni prostor obuhvata najveći aktivni površinski kop "Tamnava -Zapadno polje". Analiza i izvođenje određenih zaključaka o hidrogeološkoj funkciji prisutnih litoloških članova na nekom istražnom području kao i sagledavanje njihovih prostornih odnosa od izuzetnog su značaja kod formiranja hidrogeološkog modela nekog područja. Osnovna namena hidrogeološkog modela je izvođenje zaključaka o prostiranju zastupljenih tipova izdani na istražnom području, njihovim međusobnim odnosima, kao i uslovima kretanja podzemnih voda. Na osnovu geoloških i hidrogeoloških istraživanja i analizom i sintezom dobijenih podataka, u radu je prikazano formiranje hidrogeološkog modela površinskog kopa "Tamnava -Zapadno polje". Primenjenim softverskim paketom prikazan je 3D raspored prisutnih izdani na ovom istražnom području. Kao takav, hidrogeološki model predstavlja osnovu za nadgradnju -izradu hidrodinamičkog (matematičkog) modela režima podzemnih voda. Ključne reči: konceptualni model, izdan, modelski slojevi, hidrogeološki parametri

Estimating hydraulic parameters for the complex hydrodynamic models

“…A three-dimensional hydrodynamic model of the Tamnava -West Field, based on the method of finite differences, was developed using the MODFLOW code [15] with the Groundwater Vistas Advanced graphic user interface, version 64-Bit 6.74 b.24 [16]. It was designed as a multi-layer model, with a total of eight layers (Table 1), as described in [17].…”

Assessment of Historical Flood Risk to the Groundwater Regime: Case Study of the Kolubara Coal Basin, Serbia

“…Each of the layers corresponds to a real layer, schematized and distinguished on the basis of knowledge of the terrain and the results of interpretation of field exploration. The input data used in modeling as well as the initial hydraulic conductivities of all the lithologic units were entered on the basis of previous hydrogeological investigations [34][35][36][37]. The basic dimensions of the matrix, which encompassed the extended zone of the study area, were 4000 m × 7500 m (or 30 km 2 ).…”