borehole e charge 钻孔装药
It showed that eccentric pressure is produced by eccentric decouple charge blasting on borehole wall.
实验结果表明，偏心不耦合装药在孔壁上形成明显的偏心应力场。
The complex slotted cartridge is put forward on the basis of previous research, namely, a slotted pipe is added between slotted charge and borehole, using water as medium.
在前人的基础上提出了复合型切缝药包，即是在切缝药包和炮孔壁之间再加一个切缝管，用水做耦合介质。
Mechanism of smooth borehole wall protection blasting and calculation method of the charge are analyzed in this paper.
分析了光面护壁爆破的机理和装药量的计算方法。
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