Dagushan's iron mine whose iron ore is in its third fragmentation system is in the construction process, in which the vertical deep-hole blasting technology was adopted to excavate the fragment room.
介绍了大孤山铁矿在矿石三期破碎系统的建设过程中，采用垂直深孔爆破技术挖掘破碎峒室，使挖掘工期大幅度缩短。
When in underground mine leaching, in order to improve permeability of heap leaching, speed up leaching and improve leaching effectiveness, ore should be blasted to certain fragmentation.
在地下溶浸采矿中，为了改善受浸矿堆的渗透性，加快浸出速度，提高浸出效果，需将矿岩爆破至一定的块度。
When in underground mine leaching, in order to improve permeability of heap leaching, speed up leaching and improve leaching effectiveness, ore should be blasted to certain fragmentation.
在地下溶浸采矿中，为了改善受浸矿堆的渗透性，加快浸出速度，提高浸出效果，需将矿岩爆破至一定的块度。
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