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无底柱分段崩落采矿法
释义
无底柱分段崩落采矿法
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工学
阶段崩落采矿法
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sublevel caving method without sill pillar
无底柱分段崩落采矿法
将阶段划分为分段后,自上而下逐步进行分段崩落回采矿石的采矿方法。分段下部不设由专用出矿巷道所构成的底部结构,分段的凿岩、崩矿和出矿工作在同一个分段回采巷道中顺序进行,以较小的崩矿步距向崩落区进行挤压爆破,崩落的矿石在松散覆岩下,自回采巷道的端部直接放出,利用装载设备运至溜井,再由矿石溜井溜放至阶段脉外运输巷。
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absolutely hereditary class
absolutely integrable
absolutely integrable function
absolutely irreducible
absolutely irreducible character
absolutely irreducible polynomial
absolutely irreducible representation
absolutely irreducible variety
absolutely limitable sequence
absolutely majorized subset
absolutely minimal
absolutely minimal manifold
absolutely minimal model
absolutely monotone
absolutely monotone function
absolutely monotone sequence
absolutely monotonic
absolutely monotonic function
absolutely monotonic sequence
absolutely normal
absolutely normal number
absolutely normal variety
absolutely open formula
absolutely optimal strategy
absolutely prime ideal
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