Abstract:
The columnar experimental research leaching condition of heavy metal surface construction measures the influence of longitudinal migration.Determination of each layer of the cylinder sample pH and Cu,Zn,Cd of heavy metals pollution such as the quantity,and can exchange state.The results show that:the soil layer and limestone can obviously increase tailings pH value.The soil of the original Cd content is increased obviously than the soil,the content Zn,Cu in soil in addition to the surface layer reduced significantly.The heavy metal tailing layer 1,column 2 and column 3 almost were less than the same content;The Can exchange state of Cu,Zn in covering soil column 2 and column 3 almost less than the original value of the soil,Cd in column 2 and column 3 in addition to 15 cm place are larger than the original values of the soil.Cu,Zn,Cd in tailings layer reduced significantly.the covering soil measures significant effects of Zn,the total content and can exchange state of Cu,Cd also play a role,but still heavy metal pollution in soil,limestone layer does not play a significant role.Research results can provide the basis to pollution control and tailings reclamation measures.