什么是潜孔技术和应用？
潜孔技术是应用于矿区采石业，由于冲击锤冲击孔洞底部，洞深得于延长，冲击能量没有因为联系钻杆而流失，应用井业方式Zui后随着钻头，钻具的研发，潜孔的深度，大小得于扩大。
What Is DTH?
Down the hole drilling was developed for mining and quarryingusing an impact hammer in the bottom of the hole. With theDown-The-Hole hammer drilling depths could be increased as impactenergy is not wasted in drill rod connections.
DTH drilling was quickly adopted to well drilling industry andfinally to over burden drilling with first reamer bit inventionsand later with ring bit systems making it possible to increase thecasing sizes.
潜孔锤在表土层的钻岩
潜孔钻广泛应用于地基打桩施工，由于高出产率，在离岸地基施工越来越受欢迎，隧道施工，钻井锚定施工也推广开。
Overburden Drilling with DTH Hammer
DTH casing advanced drilling is today widely used in welldrilling and in construction industry and in it is gainingpopularity in off shore applications due to its high productivity.DTH drilling is used also in horizontal break through drilling, forintegrated pipe pile walls and in anchoring - just to mention fewof the common applications.
潜孔锤的优势：
成孔垂直度好
成孔深度长
大直径
产品可靠，简单操作
全地形施工从软土层到坚硬岩层
Benefits of DTH drilling
DTH drilling has several advantages compared to competingmethods:
Hole straightness
Possibility to drill long holes
Wide size range
Reliable and simple
Works in all ground conditions from soft clay to hardestrock!
