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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丰山铜矿南缘采区应用无底柱分段崩落法采矿。

Sublevel caving method without sill pillar is adopted in the south section of Fengshan Copper Mine.

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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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