摘要
为研究不同工况下尾矿库中重金属迁移规律,以某尾矿库中Cu2+迁移为案例,建立不同初始污染浓度、水头高度、污染位置3种工况下尾矿库数值模型。应用Geostudio软件中的SEEP/W和CTRAN/W模块,并结合Fredlund和Xing拟合方程改良得到渗透系数函数,分析重金属迁移规律。研究结果表明,随着污染源浓度增加,污染物迁移范围增大,且浸润线附近污染浓度达到峰值;污染浓度随时间变化呈幂函数关系,因此应在污染早期及时治理;将污染排放位置由尾矿顶部改为尾矿右侧后重金属到达初期坝表面的时间缩短了37.5%。研究结果可为类似工程提供参考。
In order to study the migration rule of heavy metals in tailings ponds under different working conditions,the Cu2+migration in a tailings pond is taken as an example.For this purpose,a numerical model was developed for the tailings pond based on three operating conditions with different initial pollution concentration,head height and pollution location.The model was used as a case study.Using SEEP/W and CTRAN/W modules in Geostudio software,combined with Fredlund and Xing fitting equations,the permeability coefficient function is improved to analyze the migration rule of heavy metals.The findings of this study suggest that the range of pollutant migration increases with an increase in the concentration of the pollutant source,and the pollutant concentration peaks near the infiltration line.Moreover,the pollutant concentration follows a power function with respect to time,underscoring the importance of prompt treatment during the early stage of pollution.Additionally,the study found that changing the location of pollution discharge from the top of the tailings to the right side of the tailings reduced the time for heavy metals to reach the surface of the initial dam by 37.5%.These results provide valuable insights into the migration of heavy metals in tailings ponds under different working conditions.They could serve as a reference for similar projects,while the numerical model developed in this study may be used for other studies on heavy metal migration.
出处
《科技创新与应用》
2023年第13期105-108,共4页
Technology Innovation and Application
