期刊论文

Steady-State Strength Characteristics of Tailing Sand Under Acidification Condition

中文

中国钼业

1006-2602

2023

47

02

50-55+59

10.13384/j.cnki.cmi.1006-2602.2023.02.010

湖南省教育厅重点科研项目(编号：18A252)；

本校为第一机构

自然环境下尾矿酸化会产生大量的酸性废水，不仅对周边环境造成严重污染，长期作用下还会改变尾矿砂的基本物理力学性质，直接影响尾矿砂的稳态强度。对尾矿砂进行化学浸泡实验，通过控制过氧化氢溶液的用量，模拟不同堆积时期尾矿砂的酸化效果。同时开展SEM扫描电镜试验、颗粒分析试验深入了解酸化前后尾矿砂颗粒微观变化特征以及颗粒级配变化，结合固结不排水三轴压缩试验探究不同酸化程度下尾矿砂稳态强度特征变化规律。试验结果表明，酸化导致尾矿砂不断被腐蚀溶解，尾矿砂整体逐渐细粒化；随着酸化程度的加深，不同围压下尾矿砂的抗剪强度均出现了降低的趋势，尾矿砂的稳态线位置逐渐向下平...

Tailing acidification in natural environment will produce a large amount of acidic wastewater,which not only causes serious pollution to the surrounding environment,but also changes the basic physical and mechanical properties of tailing sand under long-term action,whic...MORE Tailing acidification in natural environment will produce a large amount of acidic wastewater,which not only causes serious pollution to the surrounding environment,but also changes the basic physical and mechanical properties of tailing sand under long-term action,which ...