关键词: 齐大山铁矿, 尾矿矿砂, 环境污染, 防治对策

Abstract: Without proper treatment the dry tailings and spoil soil left behind by mineral mining could cause environment pollution prolem under the actions of wind force.In this study the environment pollution effects of diy tailings of Dagishan iron mine were simulated in wind tunnel.The experiment results show that the amount of tailing transported by wind increases as the wind speed increases.It is directly proportional to the spure of wind velocity larger than threshold value The rate of tailing transport decreases with increasing moisture content.Therefore,adding some water into dry tailings and making its moisture content not,less than 3-4% could effectively reduce the blowing loss of dry tailing.