Research On Mathematical Models Of Migration And Transformation For Features Pollutants Of Mining Area In Rivers

With the development of mining, metalworking, electron industries in recent years, the heavy metal pollution has become more serious. Ore mining make the surrounding environment to become the most serious heavy metal pollution areas because of its technology industry characteristics. Frequent mining of heavy metal contamination has proved this problem in recent years. In order to understand the whole characteristics of heavy metal pollutants in mining region, the analysis of heavy metals pollution in local rivers, it is necessary to establish mining area non-point source pollution load model and heavy metal migration and transformation model, the limited data is adopted to simulation the pollutant in the load output of the whole mine and the changes of the river.This paper systematically analyzes the research of agricultural non-point source pollution load model in the recent years, the export coefficient method is selected as an improved model in these models. Landtypes’s reclassification in the export coefficient method is based on the source of heavy metal and the introduction of the heavy metal dissolution rate, then the heavy metal non-point source pollution load model which could calculate the heavy metal non-point source pollution load in Dauofang upstream mining region is established in mining area. In order to grasp the heavy metal pollutants migration and transformation in rivers, this paper discussed adsorption and analytical, sedimentation, resuspension and diffusion to the heavy metal on the basis of summed up research of the previous studies. the heavy metal migration and transformation model is established on the Dauofang upstream mining region to simulate the changes of heavy metals in the event of a tailings dam break,and the simulation results were analyzed.