在一些露天开采的铁矿,排土场的堆置量每年高达数千万t,并占用了大面积的土地。同时,为了增加堆置容量,一般是形成单台阶或多台阶排土场。必须指出,台阶高度在很大程度上决定着排土工程效率。在运输1m~3岩石的总费用中,排土费用约占20％,因此,往往采取增加排土场高度来降低排土费用,以提高矿山生产的经济效益。在克里沃罗格矿区大多数露天矿的电铲 In some open-pit mines, the amount of dumping sites is up to tens of millions of tons per year and occupies a large area of ​​land. In the meantime, in order to increase the stacking capacity, it is common to form a single-step or multi-step dump. It must be pointed out that the height of the step determines to a large extent the efficiency of earthwork. Among the total cost of transporting rock of 1m ~ 3, the cost of soil dumping accounts for about 20%. Therefore, increasing the height of the dump site to reduce the cost of dumping to improve the economic benefits of mine production. Power shovels at most open pit mines in the Krivoy Rogo mine