Hydraulic down-the-hole drill drilling video
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Down the Hole
Video Transcript The differences between the air rotary system and this drilling system are primarily the cutting action and the resulting cuttings, as shown. The down- the-hole hammer
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The drilling hole range of TAIYE-X6A-DTH is 138-203mm.Working air pressure is 20-23bar,air displacement is 25m³/min is suit for open-pit mining,quarries
6 FAQs about [Hydraulic down-the-hole drill drilling video]
What is down-the-hole (DTH) drilling?
Down-the-hole (DTH) drilling has made it easier for contractors to drill wells faster and more efficiently, and to transition from dirt boring to rock boring just by adding a compressor and hammer to the drill bit.
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.
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 hydraulic driven DTH hammer drill?
Pneumatically driven DTH hammers are widely spread and known in the industry, however a hydraulic driven DTH hammer drill is still a challenge. The DTH hammer is positioned at the end of the drill string, it is screwed to the drill rod which delivers a drilling fluid powering the hammer mechanism.
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.
How does a DTH drill work?
DTH equipment consists of a drilling hammer and a piston-powered by compressed air. As the drill string rotates, the drilling hammer strikes down on the rock. The drill bit receives its striking power from a piston inside the hammer that is powered by compressed air.
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