摘要
尾矿中小于0.02mm的细粉粒组、粘土粒组和胶体粒组只能在静水条件下沉积。这种沉积尾矿密度小、占用库容大、固结慢、强度低,对于尾矿库的安全运行极为不利。常见尾矿的沉积规律不适合于这种尾矿。推移质、悬移质尾矿沉积在扇形区或被矿浆携向远处。但由于全尾矿中这种颗粒少,离放矿口不远处的滩面坡度就变的很平缓,流速很慢,维持这种缓慢滑移流动的滩面坡度约为0.3%。
In the tailings the diameter of the fine silt fraction, the clay fraction and the colloid fraction are smaller than 0.02mm, only deposited under still water conditions. The deposition tailings'density is small, their volume is large, and their consolidation is slowly and their strength is bad. In a word, it's very bad to the safety of tailings dam. The usual deposition law of the tailings is suited to the tailings. Pushed load tailings and suspended load tailings deposit on fanshaped area or are carried by mud. Because the grain is little in full tailings,angle of beach surface slope become very smooth near the gateway, and the flow is very slow. Remain the slowly sliding flow, so angle of beach surface is about 0.3%.
出处
《中国矿山工程》
2004年第1期39-42,共4页
China Mine Engineering
关键词
尾矿
沉积
矿山安全
滩面坡度
fine tailings
hydraulic damming
the law of deposition
beach face grade
