1) closed hollow DTHhammer
闭型贯通式潜孔锤
2) hollow DTH
贯通式潜孔锤
1.
The aim of using the hollow DTH reverse circulation sampling drilling technology in the Molybdenum minerals in Henan is to solve the questions existence in drilling, holing and sampling.
三道庄钼矿勘探生产中钻遇的地层非常复杂,采用其他方法均无法实现钻进,经过分析比较,决定采用贯通式潜孔锤反循环连续取心(样)钻进新技术来解决该地层钻进难、成孔难、取样难等三大问题。
3) hollow DTH hammer
贯通式潜孔锤
1.
Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling.
气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
4) hollow-through DTH
贯通式潜孔锤
1.
Application of hollow-through DTH to completed strata and improvement of reverse-circulation drilling bit;
复杂地层钻进中贯通式潜孔锤的应用及反循环钻头的改进
2.
Investigation of the Application of Hollow-through DTH Hammer Reverse Circulation Drilling Technique in Mineral Exploration
贯通式潜孔锤反循环钻进技术在矿区勘探中的应用研究
5) hollow-through DTH hammer
贯通式潜孔锤
1.
The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted,it is proved that this technique can resolve drilling.
采用贯通式潜孔锤全孔反循环钻进技术进行生产性试验,实践表明,该工艺方法能够解决该矿区的钻探难题,获得良好的应用效果。
2.
As a kind of high and new technique, reverse circulation and continuous coring(sampling) drilling technique of hollow-through DTH hammer usually met complex formations(i.
贯通式潜孔锤反循环连续取心(样)钻进技术作为一项高新技术,在实际施工中经常遇到复杂地层(如坚硬破碎地层、卵砾石地层和溶洞地层),尤其在我国西部,钻进过程中经常发生一些问题,严重影响了正常钻进和该技术的推广与应用。
3.
The Hollow-through DTH hammer reverse circulation drilling technique is regarded as the advanced DTH hammer drilling technology, which integrates three advanced drilling methods of DTH hammer fracturing rock, fluent removal by reverse circulation and continually obtaining core and sample during drilling.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法,适用于复杂地层中的地质勘探以及各类钻孔工程。
6) 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
补充资料：闭锤
1.古代编席的工具。
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