Smooth surface blasting is performed.
采用光面控制爆破。
The essay expatiates the techniques of borehole in surface blasting, and instructs the construction of borehole in surface blasting.
本文阐述了露天深孔爆破的钻孔施工工艺，对露天爆破钻孔有参考和指导作用。
One time blasting of deep and medium holes was applied for the cut through raise and smooth surface blasting was used for the stope periphery and upper wall to ensure the stope safety.
采场切割井用中深孔一次爆破技术，采场周边及上盘则采用光面爆破技术，确保采场稳定。
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