The undermine method of well drilling technology once of blasting is put forward as well as the calculation of blasting parameters and the demand of implementation for hole.
2
对直线掏槽的炮孔布置进行了优化设计。
The cutting holes layout for straight cutting has been optimized.
3
为了考查无空孔直眼掏槽爆破参数，采用数值模拟方法研究单自由面垂直炮孔的爆炸作用问题。
To investigate the parameters of parallel cut blast without empty holes, an advanced numerical method is used to study the explosion effect of charge in hole perpendicular to a free surface.
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