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预裂爆破
eng.geol.	presplitting blasting
expl.	pre-shear-ing blast; pre-splitting; pre-split-tting explosives products; split round blasting
hydroel.st.	presplit blasting
tech.	stress-relieving blasting
预裂爆破沿开挖边界布置密集炮孔,采取不耦合装药或装填低威力炸药，在主爆区爆破之前起爆,从而在爆区与保留区之间形成预裂缝，以减弱主爆破对保留岩体的破坏并形成平整的轮廓面的爆破作业
expl.	pre-splitting blasting; preshearing
预裂爆破沿开挖边界布置密集炮孔的爆破，预先以剪切〈滑移〉破碎岩石。这些炮孔在主爆破之前起爆，是控制爆破方法之一
expl.	pre-shearing; presplitting
预裂爆破法
eng.geol.	pre-split blasting

预裂 爆 破: 16 phrases in 4 subjects

Electronics	2
Engineering geology	2
Explosives and Explosive Ordnance Disposal	9
Technology	3