ore drawing 放矿 ; [矿业] 下放矿石
stope vibratory ore-drawing 振动放矿
ore-drawing theory 放矿理论
Ore drawing at stope 采场放矿
ore drawing in stope 采场出矿
ore drawing mode 放矿方式
even ore drawing 均匀放矿
It can solve ore-drawing problems with various boundary conditions.
它可以解决各种边界条件下的放矿问题。
The crown pillar of stope is permanent loss and not recoverable, while sill pillar and barrier pillar shall be recovered after the ore drawing work is completed.
采场的顶柱作为永久矿柱损失，采场底柱、间柱等采场大量放矿完毕后，一次性进行回收。
The process of ore- drawing in block caving is completed under overburden.
自然崩落法放矿基本上都是在覆盖岩层下进行的。
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