Development of Anti-Seepage Slurry for Abandoned Crisis Mine Tailings
In response to the problem of abandoned crisis mine tailings,especially the pollution of groundwa-ter,rivers,and surrounding soils by tailings leachate,a new type of anti-seepage slurry with good perform-ance,controllable setting time,high strength of stone body and green environmental protection is developed by using the grouting wall to block the leakage of leachate.The formula of the new anti-seepage slurry is 0.08%ZA,85%portland cement,15%fly ash,and 1.2%ZB.The pumpability period,initial setting time,final setting time,and water precipitation rate of the new anti-seepage slurry all meet the design require-ments after test,and the strength and permeability coefficient of the stone body can meet the performance requirements of the anti-seepage wall.