西石门铁矿采用无底柱分段崩落采矿法开采。

Sublevel caving without sill pillar is used in Xishimen Iron Mine.

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无底柱分段崩落采矿法是一种高效安全的采矿法。

Sub-level caving is an efficient and safe mining method.

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无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。

Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution.

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