他有信心，目前的煤炭价疲软是暂时性和有随着冬季再度呈强势，今年，该公司也计划降低剥离率（strip ratio），由去年的11.5%降至10%。剥离率是煤炭总产量与剥离的泥土数量比例，剥离率越低品质也就更好，因更节省的缘故。
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strip mine ratio 剥采比
This paper presents a practical final-pit optimization algorithm for open-pit metal mines based on a breakeven strip ratio and a block model of ore grade.
给出一个基于经济合理剥采比和品位块状模型的露天金属矿境界优化实用算法。
Results indicate the local high point height and additional tension stress of rolled strip are proportional to local high point initial height of strip, decrease as rolling reduction ratio increases.
研究结果表明：轧后带钢局部高点高度及附加张应力的大小与来料高点高度成正比，随总轧制压下率的增大而减小。
The cause of strip width shrink (SWS) during hot continuous rolling is analyzed. A method to calculate SWS ratio is provided, some approaches for SWS reduction are discussed.
分析了窄带钢热连轧过程宽度拉缩的原因，给出了计算宽度拉缩率的方法，探讨了减少宽度拉缩的技术途径。
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