About High-lift anchor down-the-hole drilling rig construction video
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6 FAQs about [High-lift anchor down-the-hole drilling rig construction video]
What is anchor drilling rig used for?
The anchor drilling rig is mainly suitable for anchoring and supporting deep foundation pits. It can also be used for rotary grouting construction by replacing the rotary grouting module. 8.
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.
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.
How do you drill a rock with a DTH hammer?
This method is mainly applied for hard to very hard rock and/or for penetrating large boulders. 1. Setting the DTH hammer with drill rod and casing on the drilling point. 2. Rotary and percussive drilling of the drill string under compressed air supply. 3. After reaching the final depth, unlocking of the drill rod with DTH hammer and pilot bit.
What are the applications of anchoring?
Application: anchoring engineering, anchor cable construction, anti-floating anchor pilot holes, rotary jet grouting, soil nailing support, dewatering wells, geothermal well boreholes, civil engineering, geotechnical engineering, slope support anchoring, deep foundation pit reinforcement treatment. Easy ways to get the answers you need.