Digital model of South Moravia lignite coalfield

In this contribution methodological procedures and results of digital modelling and assessing the lignite deposit in the Czech part of the Vienna Basin (the South Moravian Lignite Coalfield) , applied in the frame of solution of the Grant Agency of the Czech Republic project No. 105/06/1264, are presented. Deposit database includes data from almost 3000 drills. Except of primary deposit data, the database contains data on identically re-assessed economical thicknesses of the coal seam and coal benches. The seam is split in up to four coal benches (altogether 7 horizons). The basic deposit model is a so-called geological model, which describes the structural character of the deposit and defines the spatial positions of the coal seams. On the basis of the geological model so-called economical models, i.e. variant models according to the coal quality, are created. These models respect the spatial geometry of the coal seams, as described by the geological model. The digital seam model is applied for a comprehensive assessment of the lignite deposit, to determine both its morphology and the distribution of particular deposit attributes. (authors)