某赤泥坝不同防渗条件下的滤液渗流分析

Seepage Filtrate Analysis under Different Conditions

使用数值分析手段,对赤泥坝尾矿库滤液的渗流运动形式、方向、水压力分布情况的模拟结果显示:不采取防渗措施时,赤泥滤液会对周围环境造成污染;部分采用防护措施时,赤泥滤液会通过坝体渗出流向周围环境,仍会对周围生态造成威胁;采用全封闭防渗措施后,赤泥滤液通过渗流井排出,对周围环境影响很小;全封闭防护状态下,防渗等级提高时,赤泥滤液渗入坝底的量随之减少。为了保障安全,应对赤泥库进行全封闭防渗处理,并结合周围水环境状况选择合适防渗等级。

The flow pattern, direction and water pressure distribution of the filtrate of the red mud dam were simulated by means of numerical analysis. The results show that the red mud filtrate will pollute the surrounding environment without anti-seepage measures, it will flow to the surrounding environment and the red mud filtrates through the dam exudation, posing a threat to the surrounding ecology with partly protective measures, and it is discharged through the seepage well having little effect on the surrounding environmentwith fully enclosed anti-seepage measures andthe amount of red mud filtrate infiltrated the dam bottom decreases when the impermeability level is increased. The red mud bank should be fully enclosed with seepage treatment, and appropriate anti-seepage measuresapplied for protection of the surrounding water environment.