Rain has serious effect on the operation of long and narrow deep open pit. 降雨對狹長深凹露天礦的生產有嚴重的影響。
The optimal furrow pit direction and the optimal slope configuration fit to the little north open mining was obtained. 優化設計所取得的邊坡形狀為金堆城露天礦最大限度的減少廢石剝離量，指導採區安全生產提供了幫助。
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