2) reverse circulation DTH hammer
贯通式反循环潜孔锤
1.
Application of reverse circulation DTH hammer drill in anopen-pit mine exploration;
贯通式反循环潜孔锤在某露天矿钻探工程中的应用
3) reverse circulation DTH
反循环气动潜孔锤
1.
According to the technical problems in positive circulation construction,a new derived system of reverse circulation DTH was developed,which has been applied in the construction of water well and alluvial exploration with remarkable effect.
针对目前正循环气动潜孔锤施工中存在的若干问题,开发研制了新型派生系列反循环气动潜孔锤,经过在水井、砂金勘探施工中的应用,取得了非常显著的效果,为我国采用此种工艺方法施工提供了一种新的产品,使得这项技术更加完善,更加成熟,应用领域更加广阔。
4) through-type DTH hammer reverse circulation bit
贯通式潜孔锤反循环钻头
5) reversing port
反循环孔
6) ring combination drowning drift
环式组合潜孔锤
1.
Working principle,structural design,and drilling technology of full diameter ring combination drowning drift is introduced.
论述了大直径嵌岩桩孔钻进的现状、发展趋势,阐述了大直径环式组合潜孔锤的工作原理、结构设计、钻进工艺方法,对设计加工的HC-15型环式组合潜孔锤钻具进行了室内模拟试验,并对试验结果进行分析总结。
补充资料：揲揲锤锤
1.象声词。促织的叫声。
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