longhole

常見例句

• Large-diameter longhole blasting was used to excavate soil-rock in some engineering project.
  某工程的土石方開挖采用大直徑深孔爆破方式。
• This paper briefly intro-duced the practice of longhole blast shaft-formirg method for blind shaft sinking in Tongshan Copper Mine.
  本文簡要介紹了深孔爆破成井法在銅山銅礦盲豎井掘進(jìn)中的實踐。
• The blasting technique of vertically parallel and dense bunch longhole is a new ore breaking technology.
  垂直平行密集束狀深孔爆破技術(shù)是一種新的崩礦技術(shù)。
• In recent years,severe rock fall occur in stopes with large-diameter longhole mining in Tonglushan Copper-iron Mine.
  近年來,銅綠山銅鐵礦深孔采場出現(xiàn)了嚴(yán)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進(jìn)天井運(yùn)用中取得一定效果，而在平巷掘進(jìn)中運(yùn)用卻未予以足夠的重視和研究。
• Longhole shock controlled blasting is an important method which preventes coal andgas ouburst in tunnelling.
  本論文深孔松動控制爆破的成縫機(jī)理進(jìn)行了總結(jié)和分析。
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