The Effect of Single-Layer Cover System to Control Acid Mine Drainage in Tailings Dam

Acid mine drainage (AMD) produced by oxidation of sulphide minerals contained in mining wastes remains one of the critical environmental challenges for the mining industry (Wheeland and Feasby, 1991). The oxidation reaction can cause acidification and heavy metals release in surface and ground water (Dagenais et al., 2005). Use of cover system on mine waste is an effective method for prevention or reduction of acid mine drainage creation (Quangrawa et al., 2005). Use of single layer cover is a method in which the water level remains near the tailings surface (Demers et al, 2009). In this research, the behavior of single cover in controlling oxygen diffusion through cover system was evaluated.