EKG在干堆尾矿坝中的应用分析

Application analysis of EKG in dry tailings dam

为验证EKG(电动土工合成材料)在干堆尾矿库中的排水性能和稳定性提升效用,以某干堆尾矿库为例,采用Geo-studio软件对比分析尾矿库原始工况和EKG工况2种不同工况的渗流、静力、动力计算结果。结果表明:对比原始工况的尾矿坝,采用EKG之后的堆积坝浸润线明显降低,经EKG作用后危险滑移面各点孔隙水压力沿滑移面距离的增加而降低,在地震动力影响下EKG工况下的尾矿坝液化区面积随着浸润线的降低明显减小;EKG增强了尾矿坝体的排水性能,降低了孔隙水压力对坝体的消极作用,采用EKG筑坝对堆积坝体具有加筋固结效果,可提高尾矿坝的整体强度。

To verify the drainage performance and stability improvement effect of EKG in a dry-pile tailings reservoir,we use Geo-studio software to compare and analyze the seepage,static and dynamic calculation results of two different working conditions of the original working condition and EKG working condition of a dry-pile tailings reservoir.The results show that comparing with the tailings dam under the original condition,the saturation line of the dam after EKG is obviously reduced.The pore water pressure at each point of the dangerous slip surface decreases with the increase of the distance between the slip surfaces.Under the influence of earthquake,the liquefaction area of tailings dam under EKG condition obviously decreases with the decrease of saturation line.EKG can enhance the drainage performance of tailings dam and reduce the negative effect of pore water pressure on the dam.EKG can enhance the overall strength of tailings dam.