In dry-stack tailing ponds with high fine-grained content, a high long-term saturation line can lead to dam failure. Electroosmotic consolidation is an effective method for reducing dam saturation lines. However, traditional electrodes have low corrosion resistance and poor contact, which limits the development of electroosmotic drainage technology for tailings. In this study, an electroosmotic drainage device, an electrokinetic geosynthetic (EKG) electrode, was designed. The influence law of the electrode material, potential gradient, and number of electrodes on the water drainage, current, and resistance was analyzed. The results show that the EKG electrode has excellent corrosion resistance, with its weight loss after electroosmosis, water drainage, and equivalent allowable current being 1.67%, 122%, and ∼2.3 times that of a copper electrode, respectively. Furthermore, it was found that the optimal potential gradient was 1.2 V/cm, and the water drainage cannot be improved by an exceedingly high potential gradient. The current pathway in the test box was in parallel, and the water drainage increased to 410% and the contact resistance decreased by 83% when the number of electrodes was four. These results and novel methodology provide new ideas for EKG electrode design and represent an effective method for saturation line control in gold tailing ponds.

中文翻译：

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多动电土工合成材料电极下金尾矿的电渗

在细粒含量高的干堆尾矿库中，长期高饱和线可能导致坝体溃坝。电渗固结是降低大坝饱和线的有效方法。但传统电极耐腐蚀性低、接触不良，限制了尾矿电渗排水技术的发展。在这项研究中，设计了一种电渗引流装置，即动电土工合成材料（EKG）电极。分析了电极材料、电位梯度、电极数量对排水、电流、电阻的影响规律。结果表明，心电图电极具有优异的耐腐蚀性能，其电渗失重、排水后失重和等效许用电流分别是铜电极的1.67%、122%和~2.3倍。此外，发现最佳电位梯度为1.2V/cm，并且通过过高的电位梯度不能改善排水性。试验箱内电流通路为并联，当电极数量为4时，排水量增加至410%，接触电阻下降83%。这些结果和新颖的方法为心电图电极设计提供了新的思路，并代表了金尾矿库饱和线控制的有效方法。