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露天铁矿开采经验表明:近年来相继开发的矿床其剥离岩层厚度有愈来愈大的趋势。比如在库尔斯克磁力异常区露天矿被采掘的剥离层厚度从列贝金斯克矿的70米,增加到南列贝金斯克矿和斯托林斯克矿的110米～130米。拟开始开发的切尔娘斯克和普里奥斯考尔斯克矿床的覆盖岩层厚度达到160米。在哈萨克斯坦加盟共和国的卡恰尔斯克铁矿床正在建设的露天矿,其剥离岩层
Open-pit iron ore mining experience shows that: in recent years have been developed deposits of peeled rock thickness has a growing trend. For example, the thickness of the stripping layer excavated in the open-pit mine in Kursk magnetic anomaly increased from 70 meters at the Lebes Ginsk to 110-130 meters at the South Leibinsk and Stolinsk mines. The thickness of the cover rock to be developed in the Chilterns and Prius-Korsk deposits is about 160 meters. The open pit mine under construction at the Khazarsk iron deposit in the Federated Republic of Kazakhstan,