Study On The Mechanism Of Leachate Of Waste Rock Hill In Fuxin Coal Mining Area For Groundwater Pollution And Its Countermeasures

The waste rock hill is one of the main contamination sources that cause the pollution of groundwater by investigating groundwater pollution conditions of Fuxin coal mining areas whose area is about 500km2.In this paper, taking the waste rock hill in Xinqiu as an example, the numerical model of groundwater flow and contaminant migration are established. The coupled model is numerically solved by SOM method, which predict the temporal and spatial distribution features of contaminant concentration. Additionally, the visualization of the pollution halo areas and distribution range are presented.The fuzzy mathematical colligate evaluation theory is adopted to evaluate the groundwater quality in Yujiagou area and it is compared with the Nemero index method. The exiting problems of the BP method in water quality assessment are discussed.In light of the real mining area conditions, the methods to weaken the disasters are presented on waste rock hill utilities, preventing the leachate pollution and controlling the polluted aquifer.