Acta Facultatis Ecologiae - Technická univerzita vo Zvolene

159ACTA FACULTATIS ECOLOGIAE, 16: Suppl. 1, 149–162 Zvolen (Slovakia), 2007IDENTIFYING DISPARITIES IN THE PODKRUŠNOHOŘÍROCK ENVIRONMENTMirka BlažkováEnvironmental Faculty, J. E. Turkyně University, Králova výšina 7, 400 96 Ústí nad Labem, Czech Republice-mail:blazkova@fzp.ujep.czABSTRACTBlažková M. Identifying Disparities in the Podkrušnohoří Rock EnvironmentRock environment is a fundamental part of the overall environment; however the necessary indicatorsfor its evaluation do not exist. This paper is an introduction of defining them and gives directions for theirelaboration. To identify them, the environs in Northern Bohemia were chosen, where the rock environment,along with Northern Moravia, is the most afflicted. A predominant amount of the known factorsdisrupting the rock environment are represented here to an exceptional degree of accumulation. It concernsthe disparities of the region under investigation in contrast to other regions in the Czech Republic.Key words: rock environment, indicators, disparity, mineral miningINTRODUCTIONThe area of Northern Bohemia, especially theNorth Bohemian brown coal basin, is known forthe enormous anthropogenic disturbances to theEarth’s surface. A qualified estimate pouts it at90 % of the surface in the districts of Chomutov,Most, Teplice and Ústí nad Labem.The anthropogenic changes to the surface arisedue to human activities or are corrected with man’sassistance. Their classification is genetic accordingto how and why man made them. The intensity ofthe disturbances depend on several factors such asthe settlement density, the location of industries, theoccurrence and deposition of raw materials, the typeof usage of the agricultural and forest soils, etc.CLASSIFYING THE INTENSITYOF THE DISTURBANCES TOTHE ROCK ENVIRONMENTFor an overall appraisal of the disturbances tothe rock environment it is necessary to combinethe individual processes and not to appraise themseparately. It concerns the changes by mutuallyconnected stimuli and the mediated effects andconsequences.For the Czech Republic were determined 5 categories[1, 2] especially for mechanical and thenchemical disturbances. Levels 1–5 classify relationshipsfrom mild to extreme disturbances.Mechanical disturbance to the rock environmentis based on phenomena such as erosion andsedimentation, slope movement, karstic features,mining mineral materials, old mines, building andground work.On a territory classified in the 5 th level of mechanicaldisturbance more than 50 % of the surfaceis afflicted by marked relocation of large volumesof rock and earth. The surface and undergroundmining and sites are undermined with the threatof surface subsidence. It is densely populated, hasfrequent slope movements, strong erosion and theresulting sedimentation and a large concentrationof industrial activities.Chemical disturbance to the rock environmentis defined by pollution of underground water andsoils, agricultural activities, an excessive occurrence