• 无底柱浅孔留矿60%。

    Short-hole shrinkage method without sill pillar occupies 60%.

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  • 根据厂沟金的开采技术条件选用了法回采

    According to the technical mining condition in Hua Changgou Gold Mine, the short hole shrinkage mining was chosen.

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  • 叙述了堡子湾金多年应用留矿的生产实践以及对采切工程的改进。

    The paper introduced shallow hole shrinkage stoping method that has been used in Baoziwan Gold Mine for many years.

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  • 详述宝丰铅锌开采技术条件介绍了浅孔留矿应用存在的问题。

    The technical mining conditions of mineral deposit of Baofengshan Lead-Zinc Mine are stated in detail, some problems in application of shorthole shrinkage stoping introduced.

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  • 大冶露天采场山露天转地下项目重要工程采用进行开采。

    The hanging wall ore of the open-pit is one of important projects in transition from open pit to underground in Daye iron mine, and the shallow hole shrinkage mining method is adopted in the project.

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  • 破碎开采,采用了将常规留矿法中分选改为分选石的方法。

    In mining the extremely fractured thin ore body, the separation of waste rock in the conventional shrinkage stoping was replaced by the separation of the rich ore and retaining the lean ore.

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  • 法对急倾斜薄开采一种有效的采方法具有高效低耗工艺简单等优点

    Short-hole shrinkage mining is an effective method for mining steep-thin veins, and it has advantages of high-efficiency and low-waste and simple technology.

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  • 平度市利用现有条件,因地制宜采用“三无”即底、间、浅扎,收到了效果

    Based on the existing conditions, Pindu Municipal Gold Mine preferred short-hole shrinkage stoping without sill, intermediate and crown pillar to other mining methods and obtained excellent result.

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  • 我国使用最早、应用范围很广方法之一,是一种适应性灵活性大的采方法

    Shrinkage mining method is China's earliest use and widely applied methods of mining, is a strong adaptability and extreme flexibility mining method.

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  • 对于倾斜开采国内外最常用方法浅孔留矿法,实践表明,该法存在人工劳动强度大、贫化率高等缺点

    Through an exploratory survey of residual deposit in the sourthern zone of a copper ore mine, inclined thin veins with difficult occurrence and complicated mining conditions were discovered.

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  • 本文探讨了浅孔新型变形方案留矿全面法、静态留矿法、削壁法,以及这些方法的开采条件,采场主动支护回收等。

    The paper discusses the new options of short-hole shrinkage: all-over mining, static shrinkage, precipice shrinkage, rock mining conditions, active supporting and ore pillar recovery.

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  • 研究表明,综放沿空巷受采场影响时间程度煤柱宽度增加表现出明显滞后现象以及位移压力增长的同步现象。

    The study indicates that with the increase of the coal pillar width the peak mining stress delays its appearance and the increase of the displacement and stress are not synchronous.

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  • 地质地球化学研究结果认为,铝土物质来源于统韩家店云母页岩

    The geological and geochemical study results indicate that the metallogenetic materials came from the hydromica mudstones and shales of the Hanjiadian Group of Lower Silurian System.

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  • 地质地球化学研究结果认为,铝土物质来源于统韩家店云母页岩

    The geological and geochemical study results indicate that the metallogenetic materials came from the hydromica mudstones and shales of the Hanjiadian Group of Lower Silurian System.

    youdao

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