“无底柱分段崩落采矿法”的概念、定义、翻译、参考文献-科学参考

单词	无底柱分段崩落采矿法
释义	无底柱分段崩落采矿法 Encyclopedia 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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