A hazardous waste landfill was selected as the research site.A hydrogeological conceptual model and a coupled model of water movement and solute migration were established base on geological and hydro-geological characteristics to quantitatively calculate and predict the diffusion mode of pollutants in leachate in groundwater by numerical simulation.The results showed that significant"capture"effect occurred in groundwa-ter at downstream sensitive sites due to the disturbance of forced mining.The pollutants migrated quickly and would reach downstream sensitive area in around 1 987 days.During the simulation period,the maximum migra-tion distance of pollution plume was 875.62 m,and the maximum range was 9 986.4 m2 above the standard.Based on the prediction results,it was proposed to establish a groundwater pollution risk prevention and control system that included source prevention,process supervision and end treatment.
关键词
危废填埋场/污染物迁移/数值模拟/环境风险防控/开采扰动/地下水
Key words
Hazardous waste landfill/Po-llutant migration/Numerical simulation/Environmental risk prevention and control/Mining disturbance/Groundwater
维普
万方数据