CAJ | 학술논문

以甘肃省合作市某尾矿库库区作为研究区,应用Visual MODFLOW建立了地下水水流模型和溶质运移模型,模拟了4种特征污染物在尾矿库无防渗和尾矿库人工防渗层破损两种非正常工况下的运移情况. 数值模拟预测了污染物的影响范围、超标范围和最大运移距离. 由预测结果可知:污染物主要沿水流方向运移,对水环境的影响随时间逐渐增大;氨氮和总磷对水环境的影响较大,总砷和六价铬影响较小;两种工况中,尾矿库无防渗对水环境造成的影响更为恶劣.
이감숙성합작시모미광고고구작위연구구,응용Visual MODFLOW건립료지하수수류모형화용질운이모형,모의료4충특정오염물재미광고무방삼화미광고인공방삼층파손량충비정상공황하적운이정황. 수치모의예측료오염물적영향범위、초표범위화최대운이거리. 유예측결과가지:오염물주요연수류방향운이,대수배경적영향수시간축점증대;안담화총린대수배경적영향교대,총신화륙개락영향교소;량충공황중,미광고무방삼대수배경조성적영향경위악렬.
Taking a tailing pond in Hezuo of Gansu Province as study area , this paper established a ground-water flow model and a solute transport model by using Visual MODFLOW , and simulated the migration sit-uations of 4 kinds of pollutants under 2 non-normal conditions .One condition is that the tailing pond takes no measures to prevent infiltration , while the other is that the impermeable layer is damaged .The numerical simulation predicts the reach , excessive range and maximum migration distance of the pollutants .The result showed that the contaminants mainly transport along the flow direction , and effect of pollutants on water en-vironment is gradually increasing with time .The impacts of ammonia and total phosphorus on water environ-ment prove to be greater while that of total arsenic and hexavalent chromium is smaller .By comparing the migration features of contaminants under two abnormal conditions , the influence of tailing pond on water en-vironment with absence of impervious layer is worse .