1) umbrella drilling
伞钻打眼
2) punch-pliers
打眼钻
3) predrilling
打超前钻眼
4) bore
[英][bɔ:(r)] [美][bɔr]
钻;镗;打眼;孔
6) umbrella driller
伞钻
1.
In this paper, the blasting and drilling techniques are improved in the following aspects: drilling by umbrella driller, charging with plastic pipes, detonating with non-electrical detonators.
根据现场具体条件,改进钻爆工艺,采用伞钻打眼,塑料管装药,非电雷管起爆,优化爆破参数。
补充资料：打眼
1.睁眼。 2.显眼，容易引人注意。 3.钻孔。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条