“block caving mining method”的概念、定义、翻译、参考文献-科学参考

单词	block caving mining method
释义	block caving mining method Encyclopedia 工学阶段崩落采矿法释 block caving mining method阶段崩落采矿法利用深孔或者中深孔凿岩爆破工艺将阶段内矿石一次崩落的采矿方法。矿块布置和回采工艺大体与有底柱分段崩落法相似，落矿需要借助凿岩爆破的外力。属于一步骤回采。
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