2) wet type drilling hole
湿式打眼
1.
This paper narrates the wet type drilling hole way of external spraying water_electric interlock electric coal drill, gets good dust_free effect by field test.
叙述了外喷雾水电联锁煤电钻湿式打眼法 ,通过现场实践取得良好防尘效
3) umbrella drilling
伞钻打眼
4) drilling water hole
打水眼
1.
This paper from both theoretical analysis and practical experience,successfully to blast in weak strata consolidation、freezing layer and soft rock,the use of drilling water hole solved the difficulty in drilling hole,the use of PVC plastic pipe solved the difficulty of charge,the use of adjust detona.
本文从理论分析和实践经验相结合,成功地进行弱固结地层、冻结地层及软岩的爆破,采用打水眼解决了打眼的困难,采用PVC塑料套管解决了装药的困难,采用调整雷管的延期爆破时间和钻孔间排距,解决了因爆破冲击波造成炸药密度改变、感度降低造成的拒爆难题。
5) eyelet work
打孔眼
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