The Pollution Of Heavy Metal Elements Accumulation And Risk In Ore District

This paper selects ten areas in Dabaoshan mine area such as Liangqiaovillage,Shuilouxia village,Shangba village and Xiaba village, choose this ten area whichpolluted by heavy as study area. then select the water samples, soil profile and surface soiland roots of plants, river sediment, tailings and other close over1000samples as experimentalsubjects, using GIS software. fuzzy mathematics and engineering risk to modeling andsimulation analysis. according venture assessment, risk analysis, risk estimation and a seriesof disaster risk assessment and project risk assessment methods and steps, and analyzemigration patterns, cumulative pollution and the harmful to environment. the main contents asfollows：(1) Organize and analysis research materials in Dabaoshan area about heavy metalpollution, through analysis and research on heavy metal pollution problems of Dabaoshandata, and compared with previous research on heavy metal pollution in mining to lead studyof this paper.(2) Through scene sample and experimental data to analyze the release and migration ofheavy metals in the mine. find Dabaoshan mine sources of heavy metals are mainly threeaspects including sources of heavy metals mining activities. sources of heavy metalsbeneficiation activities and Sources of heavy metals smelting activities(3) According to analysis the soil environmental quality and water quality of accumulatesolutions.pollution and ecological risk in Dabaoshan mining area, in the upstream region ofDabaoshan, for example reservoir area,Liangqiao area,Shuilouxia aera. in the cumulativeanalysis found that the heavy such as Cd.Pb.Cu.Zn are in a highly aggregated solution. basedon the classification of risk, the extent of accumulation of heavy metals in these areas are in astate of high cumulative risk. according to fuzzy mathematical evaluation methods found thatsoil pollution classification in these four area are in secondary and tertiary contamination state.at the downstream of Dabaoshan the pollution of risk levels in a higher risk level. in fourstudy area. there are10samples in Liangqiao area and Xiaba area that the pollution of risklevels in a state of severe risk rating. but in the Yanghe area and Shangba area the pollution ofrisk levels are in a state of mild and moderate risk rating.