共查询到20条相似文献,搜索用时 15 毫秒
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Journal of Mining Science - The authors substantiate applicability of type-design practice of geotechnical facilities by their complexity with a view to determining structure and contents of... 相似文献
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Yakovlev V. L. Zyryanov I. V. Zhuravlev A. G. Cherepanov V. A. 《Journal of Mining Science》2018,54(6):979-987
Journal of Mining Science - The results of the work on the scientific and technical framework of the open pit mine haulage machinery design for the national standard initiated by ALROSA Group in... 相似文献
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介绍了紫金山金矿露天采场6条深溜井设计、施工、生产管理概况。论证了溜井结构、溜放散体物料性质、生产管理等诸因素对溜井堵塞、跑矿故障发生概率的影响,分析了溜井系统技术经济的合理性。在此基础上结合实际提出了针对该露天采场溜井安全高效运行的几点技术措施。 相似文献
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介绍了建国以来,我国金属矿山露天采矿技术取得的进展,并与国外先进水平进行了比较,得出我国在露天矿陡帮开采、高台阶开采、穿爆技术方面发展迅速并具有一定的技术优势,基本是跟随国际研究趋势,甚至部分技术达到了国际领先。在露天矿山运输系统、设备大型化、自动化方面已经接近国际先进水平,在数字矿山、开采监控手段现代化以及矿山现代管理等方面差距较大。提出了今后一段时期内,露天采矿技术的发展趋势是开采工艺连续化、集中化,装备水平大型化、智能化,开发极深露天矿开采、无废开采技术,建设数字化矿山等。 相似文献
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In this paper, mining dynamics is defined as the relationship between the mining rate and movement of mining operations conducted on the benches of a surface mine. This relationship describes the intensity of the pit development in space, in order to meet ore demand at the mill over time. Meeting the mill ore demand is a key factor in optimizing production scheduling in surface mines. Displacement velocity of mining operations within cutbacks, or independent pit units, is introduced in the context of long-term mine planning. Displacement velocity allows the place and time of transition of the mining operations from one independent pit unit to another to be determined as the condition for meeting the mill ore demand. An application using data from Mt Keith Nickel Operations in Western Australia is used to elaborate on the methods presented. 相似文献
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为深入评价高台阶爆破质量,试验研制了全天候电铲在线自动监测评价仪,通过测定岩石的可挖性指标和铲装指标来评价爆堆质量的优劣。该方法与爆堆块度摄影图象分析法相结合,使爆堆质量评价方法更加完善,成为现代矿山优化生产和科学管理的有用工具。 相似文献
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The article presents a procedure to select loading and transportation machines for an open pit complex ore mine. The choice of a shovel–dump truck production system is validated using a statistical testing method (Monte Carlo technique). Stop-watch readings allowed relating the productivity of the production system, degree of ore fragmentation and content of oversizes; the soundness of the choice of the production system based on the revealed criterion was proved. Using the law of the Palm flows, the authors determine the number and sequence of dump trucks for loading in a one-server system. 相似文献
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边际效益法在露天采矿分期境界优选中的应用 总被引:1,自引:0,他引:1
本文阐述了边际理论的基本原理,提出了边际效益的概念。针对用参数化函数法搜索所得的多个露天采矿分期境界方案,运用边际效益法进行了比较决策,得出了分期开采的最优境界方案,为确定矿山的合理开采境界提供了一种新的技术手段。 相似文献
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结合中国铁矿深凹露天转地下开采的特点, 论述了灾害预警信息化方向, 阐述了灾害预警机制、灾害预警信息源、灾害预警方法的最优决策等信息化关键问题。提出了深化灾害主控因素、宏观破坏特征、灾变规律与失稳分析方法、监测体系配置、监测与反分析共轭互补、决策支持系统、分类分区系统网络、对策体系与措施、信息化体系技术与方法的互补式耦合研究是预警信息化主要环节与内涵。 相似文献
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This paper deals with dispatching systems in open-pit mines. It illustrates the different strategies that exist for solving the dispatching problem and analyses the advantages and disadvantages of these strategies. Moreover, the most important elements that should be part of the dispatching system in the future are highlighted. 相似文献
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露天转地下开采围岩稳定性数值模拟分析 总被引:1,自引:0,他引:1
采用有限元数值模拟方法,研究露天转地下开采中次生应力对巷道围岩稳定性影响。分析结果表明,水平应力对围岩稳定性有重要影响,侧压系数大于0.5,水平应力对围岩产生不利影响;侧压系数大于2.0,不利影响迅速扩大。围岩中存在铰接拱结构,围岩体通过这种结构来承担上部荷载。 相似文献
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露天煤矿抛掷爆破有效抛掷率预测模型 总被引:2,自引:0,他引:2
根据露天煤矿抛掷爆破中有效抛掷率的定义,基于弹道理论和露天采矿学基本原理,提出了有效抛掷的判断准则,给出了有效抛掷部分断面积计算方法,建立了有效抛掷率离散模型和抛掷速度反演模型,通过扫描爆破前后倒堆台阶,对露天煤矿抛掷爆破有效抛掷率进行了有效预测.结果表明:流场抛掷爆破速度理论得出的坡顶速度与反演速度一致,坡顶速度近似于有效抛掷区域的抛掷速度,预测有效抛掷率的误差在5%以内,验证了模型的有效性. 相似文献
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Besimbaeva O. G. Khmyrova E. N. Nizametdinov F. K. Oleinikova E. A. 《Journal of Mining Science》2018,54(6):988-994
Journal of Mining Science - Slope stability is assessed in the Kentobe open pit barite mine located in the east of the Atasui ore province. The estimated characteristics of rock mass strength are... 相似文献