可是随着边坡加陡,边坡不稳定的危险就增大。由于边坡塌落导致要处理额外的废石、延期采矿甚至损失矿石,由加陡边帮得到的经济利益很可能付诸东流。处理这类情况的分析手段已在成本受益分析、破坏概率与风险分析方法的基础上研究成功。引自加拿大冶金公司 However, as the slope increases steeply, the risk of slope instability increases. Due to the collapse of the slopes, which lead to the disposal of additional waste rock, deferred mining and even the loss of ore, the economic benefits gained by stepping up the steep edge are likely to come to an end. The analytical tools to deal with this type of situation have been successfully researched on the basis of cost benefit analysis, probability of destruction and risk analysis methods. Cited from Canadian Metallurgical Company