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排土场的稳定性是影响露天矿安全生产的重要因素,排土场的稳定性日益成为露天矿山最为关注的问题之一。在南芬露天铁矿,冯家东沟排土场是一高台阶的排土场,以前发生过滑坡和泥石流事件,因此,对其影响排土场边坡稳定性的各种因素和工程地质条件进行了调查并采用极限平衡理论中Sarma分析方法,对冯家东沟排土场边坡的稳定性进行了系统研究,主要对冯家东沟目前情况下,可能产生浅层滑坡、深层滑坡、沿原始坡面滑坡及基层岩体滑动等各种可能发生的破坏进行了系统地分析,得出了当排水疏干工作比较完善时,边坡不会产生沿原始坡面的整体性滑坡。然而,边坡内富集了地下水时,整体滑坡也有可能形成;按目前的边坡赋存条件,边坡不可能产生在基岩内部的滑动的结论。
The stability of the dump site is an important factor that affects the safety of open-pit mines. The stability of the dump site has become one of the most important issues in surface mines. In the Nanfen open-pit iron mine, the Fengjiadonggou Dumping Site is a high-level dump site. Landslides and debris flow events have occurred before. Therefore, various factors and engineering geological conditions that affect the slope stability of the dump site Based on the investigation and the Sarma analysis method of the limit equilibrium theory, the stability of the slope in the Fengjiadonggou dump site has been studied systematically. In the current situation of Fengjiadonggou, there may be shallow landslide, deep landslide and landslide along the original landslide And the slide of the base rock, and other possible damage were systematically analyzed. It was concluded that the slope would not produce a complete landslide along the original slope when the drainage and drainage work is relatively complete. However, when the groundwater is enriched in the slope, the whole landslide may also be formed. According to the present conditions of slope occurrence, it is impossible for the slope to produce the slide within the bedrock.