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sublevel caving method without sill pillar
释义
sublevel caving method without sill pillar
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工学
阶段崩落采矿法
释
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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