longhole

常见例句

Large-diameter longhole blasting was used to excavate soil-rock in some engineering project.
某工程的土石方开挖采用大直径深孔爆破方式。
This paper briefly intro-duced the practice of longhole blast shaft-formirg method for blind shaft sinking in Tongshan Copper Mine.
本文简要介绍了深孔爆破成井法在铜山铜矿盲竖井掘进中的实践。
The blasting technique of vertically parallel and dense bunch longhole is a new ore breaking technology.
垂直平行密集束状深孔爆破技术是一种新的崩矿技术。
In recent years,severe rock fall occur in stopes with large-diameter longhole mining in Tonglushan Copper-iron Mine.
近年来,铜绿山铜铁矿深孔采场出现了严重的垮塌。
The sectional cutting method is effectively applied to longhole raising but less applied to tunnel heading.
分段掏槽法已在深孔爆破掘进天井运用中取得一定效果，而在平巷掘进中运用却未予以足够的重视和研究。
Longhole shock controlled blasting is an important method which preventes coal andgas ouburst in tunnelling.
本论文深孔松动控制爆破的成缝机理进行了总结和分析。