巴西Brumadinho尾矿库溃坝对上游式堆坝的启示

Enlightenment of the Brumadinho Tailings Pond Collapse in Brazil to the Upstream Embankment

通过分析巴西Brumadinho尾矿库溃坝相关资料,得出其溃坝原因是常年高水位运行致使尾矿液化,最终导致尾矿坝坝坡失稳出现瞬间溃坝。结合上游式堆坝工艺特点及相关液化研究,提出注重低水位运行及排渗设施方案,可加强尾矿固结,避免液化,从而避免类似溃坝再次发生。

By analyzing data related to the Brumadinho tailings pond collapse in Brazil,it is concluded that the reason for the dam failure is that the high-water level operation caused the tailings liquefaction,which eventually led to the instant collapse of the tailings dam.Combined with the characteristics of the upstream embankment and related liquefaction research,it is proposed to focus on the low water level operation and drainage facilities,which can strengthen the tailings consolidation and avoid liquefaction,thus avoiding the occurrence of similar dam collapse.