路堑石方爆破rock cutting blasting； rock blasting in cut 定向爆破 directional blasting .
双语例句
1
Based on the principle of cumulative charge explosion, a new kind of rockcuttingblasting technique, the jet perforator charge blasting in small diameter boreholes, is developed in this paper.
本文介绍了适用于小直径炮孔爆破的岩石聚能切割爆破技术。
2
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.
试验表明：强力复合掏槽在特硬岩立井掘进爆破中应用效果良好；2。
3
Rock tunnel; Briving by blasting; Wedge-shaped cutting; Blasting parameters;