About French down-the-hole drilling rig production
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About French down-the-hole drilling rig production video introduction
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6 FAQs about [French down-the-hole drilling rig production]
What is a down-the-hole drilling method?
The video shows the down-the-hole drilling method for very hard soil or rock. A rotary drilling rig, type LB 20, working with down-the-hole hammer inside a casing. A flushing current conveys the loosened drill cuttings upwards and exits at the upper end of the casing.
What is a DTH drilling rig?
This mining equipment is designed with DTH hammer to impact and fracture rock, ensuring high drilling speed. 360° (±180°) rotation provides large drilling coverage, and the drilling depth can reach up to 100m. What's more, the DTH drilling rig can be expandable to drill holes for radial cable bolting, and also for shaft drilling.
How does a down-the-hole drill work?
In down-the-hole drilling a drill rod is fitted with a hammer at its lower end. The hammer, which is mounted on the drill bit, is activated through the addition of compressed air and driven into the ground – simultaneously rotating and impacting. A flushing current collects the loosened drill cuttings and conveys them upwards.
How does a rotary drilling rig work?
A rotary drilling rig, type LB 20, working with down-the-hole hammer inside a casing. A flushing current conveys the loosened drill cuttings upwards and exits at the upper end of the casing. If you have any further questions, please contact our local sales or service team.
What was the first horizontal directional drilling through permafrost?
First Horizontal Directional Drilling through Permafrost (ARCO – Colville River, Alaska, USA – 1998 & 1999) for which HDI was nominated by the American Civil Engineering Association. Over the years, a remarkable geographical expansion has been added to these initial technical achievements :
What is a multi-functional rock drilling machine?
Designed wtih travel reducer and separated operation platform, the multi-functional rock drilling machine comes with small footprint, high working efficiency, easy operation and maintenance. Huatai is a Chinese company specialized in the design and batch production of rock drilling equipment.