• 详述宝丰铅锌开采技术条件介绍了浅孔留矿法应用存在的问题。

    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.

    youdao

  • 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.

    youdao

  • 孔留对急倾斜薄开采一种有效的采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.

    youdao

  • 对于倾斜开采国内外最常用浅孔留矿法,实践表明,该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.

    youdao

  • 无底柱浅孔留矿60%。

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

    youdao

  • 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.

    youdao

  • 根据厂沟金的开采技术条件选用了矿法回采

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

    youdao

  • 本文探讨浅孔留新型变形方案留矿全面静态留矿法削壁矿法,以及这些方开采条件,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.

    youdao

  • 本文探讨浅孔留新型变形方案留矿全面静态留矿法削壁矿法,以及这些方开采条件,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.

    youdao

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