为了模拟预测建设项目在生产运行和服务期满后对地下水造成的污染影响问题，建立了地下水渗流与溶质运移三维耦合数值模型，并以江苏吴江盛泽城区生活垃圾卫生填埋场建设项目为例，模拟预测了垃圾填埋场运行期10年内和运行期满后10年内渗滤液污染物在地下水中的运移特征。结果表明：填埋场在天然条件下和防渗条件下渗滤液污染物运移范围垂向均限于潜水含水层内，不涉及承压含水层；平面上仅限于填埋场附近。三维数值模拟能同时模拟预测渗滤液污染物垂向及水平向的运移范围，具有重要的工程实用价值。%In order to simulate the impact of construction projects on groundwater pollution during and after operation period, a three dimensional coupling numerical model of groundwater seepage and solute transportation is set up. Taking the domestic waste sanitary landfill project of Shengze county in Wujiang, Jiangsu province as an example, the migration characteristics of the leachate in groundwater are simulated and predicted during the landfill′s operation period of 10 years and 10 years after operation period. The results show that the vertical migration area of the leachate is limited in the unconfined aquifer and isn′t involve the confined aquifer, the horizontal migration area of the leachate is limited nearby the landfill. Three dimensional numerical simulation model can simulate and predict the vertical and horizontal migra-tion area of the leachate,and it has great engineering practical values.
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